Name: CoSpark
Address: 530 Technology Drive #100, Irvine, United States, CA, 92618, US
Telephone: 949-954-5590
Price range: $150 - $199
Rating: 4.9

A Certified Full-Stack WooCommerce Agency

💪 When top brands face their toughest WooCommerce challenges, they turn to CoSpark. With over 15 years of experience as an award-winning, WooCommerce-focused agency, we’ve been the go-to partner for clients when their current agency hit a wall, resources ran dry, or the expertise just wasn’t there to get the job done. We don’t just fix problems—we turn them into success stories. Our work has generated over $400 million in annual revenue for our clients, proving that when it comes to creating high-performing, enterprise-level WooCommerce solutions, we deliver—every time. If you’re tired of searching for a partner who gets real results, your search ends here.

Min project size
$10,000+
Hourly rate
$150 - $199 / hr
Employees
10 - 49
Locations
Irvine, CA
Year founded
Founded 2009
Languages
Timezones

Service Lines

E-Commerce Development: 75%
API Development: 10%
Web Development: 10%
Web Design: 5%

Select Focus Area

Application Platforms

Amazon Application Development Framework: 15%
Azure Platform: 15%
Google app engine: 15%
Other app platform: 15%
Force: 10%
Heroku: 10%
Linux server: 10%
Windows server: 10%

API Type

REST API: 25%
OPEN API: 15%
Partner API: 15%
RPC API: 15%
SOAP API: 15%
Webhook API: 15%

CMS Focus

WordPress CMS: 100%

E-commerce Systems

WooCommerce: 100%

Industries

eCommerce: 100%

Clients

Midmarket ($10M - $1B): 40%
Enterprise (>$1B): 30%
Small Business (<$10M): 30%

WooCommerce

Pricing Snapshot

Min. project size $10,000+

Avg. hourly rate $150 - $199 /hr

Rating for cost 4.6 /5

What Clients Have Said

CoSpark offers competitive pricing that fits various budgets, as noted by clients from small to medium-sized businesses. Specific project costs include over $10,000 for ongoing support and $50,000 for comprehensive web development, emphasizing value for the cost through effective solutions and responsiveness.

This summary is based on verified Clutch reviews.

Most Common Project Size

$10,000 - $49,999 based on 18 reviews

< $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

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CoSpark Review Insights

Overall Review Rating

4.9

Quality 4.9
Schedule 4.9
Cost 4.6
Willing to Refer 4.9

Top Mentions

Review Highlights

Challenges with Delays and Communication

While generally praised, some clients have noted occasional delays in backend programming and communication issues, suggesting potential areas for improvement in project timelines.
Willingness to Work with Small Businesses

CoSpark is noted for their flexibility and willingness to take on projects from smaller entities, providing personalized and attentive service regardless of the client's size.
Effective Problem Solving

CoSpark stands out for their problem-solving capabilities, often providing creative and cost-effective solutions to complex technical issues, which are highly valued by clients.
Expertise in WooCommerce and WordPress

CoSpark excels in managing and optimizing WooCommerce and WordPress systems, providing custom solutions that address specific client needs. Clients appreciate their technical expertise, which enhances website performance and functionality.
Successful Custom Integrations

CoSpark has successfully completed complex custom integrations and development tasks, such as integrating WooCommerce with other systems, which have been crucial for clients' business operations.
Seamless Onboarding and Demos

CoSpark offers seamless onboarding processes and free demos, which demonstrate their capabilities and provide clients with confidence in their decision to partner with them.

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CoSpark Reviews

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Web Design Web Development
WordPress CMS
$50,000 to $199,999
Aug. 2020 - Ongoing

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"I’m lucky to have found such a fantastic team."

May 14, 2021

Owner, Brooklyn Robot Foundry

Jennifer Young

Other industries
Brooklyn, New York
11-50 Employees
Phone Interview
Verified

To help a robotics academy adapt to online classes, CoSpark (formerly AnnexCore) updated its website and is now conducting a frontend redesign. The team also added a new booking system that collects information and payments.

Thanks to their extensive development knowledge, CoSpark (formerly AnnexCore) has upgraded the website to be functional and high-quality. To maintain a cost-effective price, the team uses creative solutions that allow them to work efficiently. The client is ecstatic with the invaluable expertise they provide.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I’m the owner of a company called Brooklyn Robot Foundry. We teach robot building and basic engineering classes to kids and adults.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with AnnexCore?

Before the pandemic, our business was all in person. We're located in New York City, where we had four locations where kids would come and build robots. Up until the pandemic, we got all of our business basically by word of mouth. We had a website, but it didn't matter what it looked like because everyone who heard about our reputation wanted to come. It was an easy way to bring in customers.

Unfortunately, we had to stop having in-person classes when the COVID-19 pandemic hit. In response to the situation, we pivoted instantaneously to how we can ship products directly to customers and then create the robots together through live Zoom classes. This strategy allowed us to expand our services outside of our local area, and this meant that our website mattered a lot more because that’s where we had to sell ourselves.

I initially worked on the development on my own — I created an e-commerce site and connected it to our existing WordPress site. I had to handle it to survive as a business, but I wasn’t good at it as my expertise was in mechanical engineer. It was functional, but it was clunky and needed software updates. It also wasn’t beautiful, and we were too busy to focus on it, so we hired AnnexCore.

SOLUTION

What was the scope of their involvement?

AnnexCore took over our web development efforts. They updated all of our plug-ins and did some repairs that we couldn’t do. They leveraged and expanded on our existing plug-ins technologies rather than building something from the ground up, which would’ve taken longer. They also ended up taking care of web hosting. We initially used a different provider, but we weren’t getting much uptime with them.

It now has a teacher dashboard and functionality that will allow people from all over the world to take our classes. Our previous booking system was only for in-person lessons, which was a very different model. This new system allows us to collect registration information and payments for our online classes.

They’re currently redoing our site entirely, starting with a frontend redesign. Our main goal is to figure out how to make the website look cool, like how we make our locations look interesting to get customers.

We now have them on a monthly retainer and assign the deliverables we need. Aside from the main project scope, we also bring them into our meetings with one of our larger partners. We plan on giving them a whole lot more work in the future.

What is the team composition?

Carl (Project Manager) is our main point of contact, but we also have worked with some of their developers, led by Phil (Front-End Developer). We also work with Heral (Managing Director), who we talk to about finances.

How did you come to work with AnnexCore?

I found AnnexCore through a Google search. I was looking for WordPress e-commerce developers, and they had good reviews.

How much have you invested with them?

We’ve spent over $50,000. Their monthly retainer is $5,000.

What is the status of this engagement?

We started working together in August 2020, and it’s ongoing.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

They’ve done a great job; the website is exactly what we needed and more. From the beginning, it's been a remarkable experience. All of the developers on their team have been exceptionally good. They catch things we can’t even see, and their work is very detailed. They have a vast knowledge base when it comes to development.

It’s also been amazing that we can pull their team into our calls with our partners, especially when we’re having technical discussions. We’re so glad to have them aboard — they make us look like a strong team. When partnering with large companies, their team gives us more confidence.

How did AnnexCore perform from a project management standpoint?

Working with them is magical — they accomplish tasks quickly and intelligently. I’d be in a call with Carl, and as I’m talking to him, the team is already doing what we need in real-time. They often finish tasks instantaneously. They’re also such a transparent and trustworthy team. They take accountability for any mistakes, which we appreciate. Their personalities are lovely, and they’re highly intelligent. Our conversations are enjoyable and pleasant. I’m lucky to have found such a fantastic team.

What did you find most impressive about them?

Their creativity is amazing. AnnexCore is very good at listening to the nuances of the issues we deal with and then coming up with incredibly unique solutions that are also very cost-effective. The team is exceptionally thoughtful about budgets — we’ve never felt like they ever wasted our money.

The other thing is service contracts are flexible — they let us start small and ramp up when we were ready. We’re a small business, and they’re very conscientious about that. Annexcore understands that we’re constantly figuring out ways to pivot our business and try to help us. Their flexibility allowed us to have a multiphase project, which they blew out of the park.

Are there any areas they could improve?

Not at the moment. They’re an exceptional team, and I rate them highly.

Do you have any advice for potential customers?

Call a vendor’s references before hiring them to make sure that they’re a good fit. Then, conduct a test run with them. This was our strategy with AnnexCore, and it worked well. I highly recommend them to everybody.

RATINGS

5.0

UX/UI Design Web Design Web Development
WordPress CMS
$50,000 to $199,999
June 2020 - Ongoing

4.5

Quality: 4.0

Schedule: 5.0

Cost: 4.0

Willing to Refer: 4.5

"We’re happy with the website. It’s very high quality."

Jun 4, 2021

Creative Director, Education Foundation

Anonymous

Education
Santa Ana, California
51-200 Employees
Phone Interview
Verified

CoSpark (formerly AnnexCore) developed a WordPress site with a scientific database transformed into an interactive, gamified format targeted at kids. The site is live, and they're now optimizing it and adding user profiles.

Since its launch, the robust, well-designed site has received 3,000 sign-ups and positive feedback. Despite the unusual project scope, CoSpark (formerly AnnexCore) successfully meets deadlines due to its dedication and excellent project management. They're collaborative and responsive, ensuring a smooth partnership.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I am the creative director of the Discovery Cube Science Foundation, a children’s science museum with hands-on interactive exhibits and programs for kids to learn about science. The product I work on the most is Discovery Cube Connect, our online platform for kids to engage in STEM activities and resources.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with AnnexCore?

We were trying to make a searchable database and gamified experience for kids. The resource had to be fun, educational, and meet the state’s standard of science education.

SOLUTION

What was the scope of their involvement?

AnnexCore has been helping us develop the Discovery Cube Connect website, which is built using WordPress. We upload our resources through the backend. The team then customizes our original content to be a fun and interactive gamified experience instead of just being in a standard format.

The project is divided into three phases. The first phase was focused on getting the database up and running, while the second phase introduced a new way of organizing and displaying material in a gamified format. We usually give them a brief of what we’re looking for and discuss the best way to implement them. Afterward, we make designs for them to execute.

We’re now on the third phase. The team has been optimizing and improving on the previous two stages to make the platform more user-friendly. They’re also expanding the account section so that our users can have profiles that detail their information, their progress, and the lessons they’ve explored and finished. Our users can also now give reviews and ratings.

What is the team composition?

We've been working with Phil (Frontend Developer) and two other teammates.

How did you come to work with AnnexCore?

The head of our IT department found them, but I’m not entirely sure how.

How much have you invested with them?

We’ve spent around $100,000.

What is the status of this engagement?

The project started in June 2020, and it’s ongoing.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

We’re happy with the website. It’s very high quality. Ever since the site launched, a total of 3,000 users have signed up for the platform.

How did AnnexCore perform from a project management standpoint?

The project management has been excellent. AnnexCore met all of our deadlines. We use Basecamp to organize our work, create to-do lists, and send messages back and forth. Aside from that, we also interface through email and video calls. Finding a time to meet is a bit tricky because of the time zone difference, but they don’t let that hinder them. It’s easy to communicate with Phil. He’s been running a very collaborative process. They’re always available to make updates and roll them out in a timely fashion.

What did you find most impressive about them?

AnnexCore is really enthusiastic about our vision — they like the idea of missions and gamifying our platform, which isn’t a typical WordPress functionality. We also love how responsive they are and straightforward the process has been.

Are there any areas they could improve?

There’s nothing I can think of that they can improve.

Do you have any advice for potential customers?

Make detailed designs of how your platform should look on a desktop, tablet, and mobile. Be communicative, too.

RATINGS

4.5

E-Commerce Development
WooCommerce
$10,000 to $49,999
Sep. 2020 - Ongoing

5.0

Quality: 5.0

Schedule: 5.0

Cost: 4.5

Willing to Refer: 5.0

"CoSpark (formerly AnnexCore) stays on top of everything. They are constantly pushing the project forward."

May 24, 2021

Marketing Director, Simms Restaurants

Ed Derrico

Other industries
Manhattan Beach, California
501-1,000 Employees
Phone Interview
Verified

CoSpark (formerly AnnexCore) integrated a restaurant’s Paytronix account and WooCommerce website. The integration is finished, and they are currently implementing updates and improvements.

CoSpark (formerly AnnexCore) successfully built a high-quality integration on time. They are flexible and accommodating to the client and a third-party provider. Their team uses their technical expertise to be creative at problem-solving, and they go above and beyond to ensure customer satisfaction.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I’m the marketing director of Simms Restaurant Group.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with AnnexCore?

We needed help in building a custom integration with our Paytronix software and our WooCommerce website.

SOLUTION

What was the scope of their involvement?

We signed on with Paytronix, and they are a company that provides software to run loyalty programs. They allow us to see how often a customer visits our restaurant, how much they order, and other data. Since our restaurant is a bit more upscale, so we don’t use Paytronix’s reward points system for our loyalty-program customers. Instead, we have a beer club, which is a monthly subscription done through our WooCommerce website. Our customers pay $22 a month, and each month they get a kit filled with beer from the local brewery we’re featuring for that month.

We needed AnnexCore to integrate Paytronix with the subscriptions to the beer club. What we wanted to happen was if a customer is a loyalty-program member and they made a subscription, they should have additional benefits. Every time a subscription is purchased, it will be logged on to Paytronix. As such, our customers’ benefits will populate on their accounts, and they can see that through our app or online.

What is the team composition?

I have worked with Heral (Managing Director), who is responsible for sales and payments. He also onboarded us and helped us figure out how their billing works. I have also worked with Carl (Project Manager), and he is responsible for project management and reaching out to us if anything’s wrong during after hours. Lastly, I have worked the most with Grahame (Backend Developer), who is responsible for development.

How did you come to work with AnnexCore?

I found AnnexCore by searching on Google for WooCommerce integration providers. I talked with 4–5 developers, and what I liked about AnnexCore was they were the most responsive. I also liked that they had worked with Paytronix in the past, and that they are listed on WooCommerce’s website as a WooCommerce expert.

Additionally, AnnexCore gave us a competitive price, and they were in the same timezone as us. Sometimes, it’s challenging to work with teams in a different timezone since we encounter problems later in the day when our customers start to come to our restaurant.

How much have you invested with them?

The first and second bill was around $8,000, and we have spent another $5,000–$10,000 doing updates. Our cost is a bit inflated because Paytronix didn’t tell us everything that needed to be done, so we had to engage with AnnexCore for a second time. Had we known everything at the start, AnnexCore would have been able to finish everything in one go.

What is the status of this engagement?

We started talking with AnnexCore in March 2020, but we only started working together in September 2020 because we were also building our Paytronix app. There were many things that needed to be done from Paytronix’s side before AnnexCore can step up and conduct their integration. AnnexCore finished their integration in December 2020, and we launched the app in February 2021.

We have engaged with AnnexCore again for another sprint that involved updating and improving the app.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

I’m happy with AnnexCore’s work. They were able to manage all our concerns, even though we often throw them a lot of random and unfamiliar tasks. In addition, they were very patient and receptive with Paytronix’s team, which was difficult to work with and only sent long how-to guides. I just set them up on an email together, and AnnexCore communicated with them.

The integration hasn’t encountered any failures, and it is built well. AnnexCore has even added little tweaks that are out of scope but made a world of difference in improving the app.

How did AnnexCore perform from a project management standpoint?

AnnexCore stays on top of everything. Even though there are delays from Paytronix or my side, they are good at following up. They are constantly pushing the project forward.

What did you find most impressive about them?

AnnexCore is always willing to find a solution. We encountered a lot of uncontrollable issues, and Grahame is always ready to get on a call with me and talk through options of how we can make things work. He always went above and beyond to resolve problems. Graham has a very complex knowledge about custom integration, and when he looks at situations, he sees a lot of things that we wouldn’t have figured out.

For example, our checkout process takes the information when someone’s checking out and sends that to Paytronix. Typically, this involves two separate steps — a user puts an item into the cart, and they’ll check out. Also, when a user creates an account, it happens on a different page. Thanks to Grahame, we got all that on one page, so it was easier to capture information. There is a lot of creative problem solving from AnnexCore.

Are there any areas they could improve?

I can’t think of anything.

Do you have any advice for potential customers?

I don’t blame this on AnnexCore, but if you’re going to work with them, make sure you have set up and built all the software and programs necessary for the integration. For us, we did them both at the same time, so what happened was AnnexCore finished their work and Paytronix haven’t. AnnexCore has a 30-day warranty after they have built their integration — within that window, customers can test for any issues, and they’ll fix them for free.

However, since Paytronix finished their work only after the 30-day warranty, we no longer have AnnexCore’s support by the time we tested the integration — which, again, is not their fault. AnnexCore works fast, and they’ll finish the project before you know it, so make sure you have everything set up.

RATINGS

5.0

Web Development
$50,000 to $199,999
Oct. 2020 - Ongoing

4.5

Quality: 4.5

Schedule: 4.0

Cost: 4.0

Willing to Refer: 5.0

"So far, CoSpark (formerly AnnexCore) has been able to handle everything I've thrown their way."

May 17, 2021

CEO, Heggerty

Andrew Follett

Education
Chicago, Illinois
11-50 Employees
Online Review
Verified

CoSpark (formerly AnnexCore) was hired by a publishing company for web development services. They are improving the site's shopping process and developing new features and applications using WordPress and WooCommerce.

The team continuously collaborates for the project's improvement based on the customer's feedback. So far, new tools and features are one of their focus as the project progress. CoSpark (formerly AnnexCore) is flexible and efficient that the client enjoys their ongoing partnership.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

I’m the CEO of a publishing company that publishes a curriculum for literacy education. We serve thousands of districts across the country and around the world.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire AnnexCore, and what were your goals?

We needed a web development partner who could help us maintain our website and develop new features and applications on an on-going basis. Our challenges range from improving the shopping and product filtering process in our online shop, to developing a new application to allow teachers to assess their students digitally, and everything in between.

SOLUTION

How did you select this vendor and what were the deciding factors?

I did extensive research online to find the best WooCommerce/WordPress development shops. I eventually selected Annexcore because of their responsiveness, experience, references, and genuine interest in our project. Carl is a great listener, very sharp, and most importantly, he does the work to understand the need and come up with a creative solution.

Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.

I had a kickoff call with Carl to walk-through the website, get them the access they needed, and develop a list of initial priorities. Carl then went back and defined the scope for each priority, attaching a project-based cost to some, and putting others under a monthly retainer. All of the work is primarily being done in WordPress and WooCommerce.

How many people from the vendor's team worked with you, and what were their positions?

Carl is the main point of contact. I also interface with 3-4 developers depending on the project.

RESULTS & FEEDBACK

Can you share any measurable outcomes of the project or general feedback about the deliverables?

We are continually making improvements to the website and user experience, which we hear about from customers. We are also seeing significant gains in efficiency internally by improving and introducing new tools and features to help us save time.

Describe their project management style, including communication tools and timeliness.

I have a monthly check-in call with Carl, and often calls in between depending on what's going on with projects. Most often the conversations are happening over email and Basecamp. The communication is fast and efficient, and I like being able to speak with the people doing the work without added layers and inefficiency.

What did you find most impressive or unique about this company?

So far, Annexcore has been able to handle everything I've thrown their way. They are specialists in a good way - they understand WooCommerce and Wordpress and have extensive experience with the platform, quirks, and related plug-ins, which is perfect for what we need. Carl has been a real partner in our digital expansion, and I enjoy working with him.

Are there any areas for improvement or something they could have done differently?

Certain projects have taken longer and/or been more expensive than I initially anticipated. There is blame to be had on both sides of the table, and it's par for the course with web development, but something to be aware of. The other thing to know is that they don't have a published phone number.

I use Calendly to schedule calls with Carl when I need them, which is efficient and makes sense, but if you're a "pick up the phone and call someone" type of person, you'll probably want to discuss that with them first.

RATINGS

4.5

Application Testing Custom Software Development E-Commerce Development
WooCommerce
$10,000 to $49,999
May - Aug. 2025

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"CoSpark was extremely responsive."

Aug 8, 2025

Executive, Lead Left Breads

Anonymous

Food & Beverage
Mountain View, California
1-10 Employees
Online Review

CoSpark provided e-commerce development services for a food company. The team customized WooCommerce, established an online ordering interface and checkout procedure, and streamlined inventory management.

CoSpark successfully completed the project, meeting all requirements and providing post-launch support. The team's resources were knowledgeable, and internal stakeholders were impressed with their ability to provide valuable ideas. CoSpark was highly responsive, communicative, and timely.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am an executive of Lead Left Breads.

Describe what your company does in a single sentence.

Cottage food operator specializing in online ordering of artisan breads and specialty bagels.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire CoSpark to accomplish?

Establish a connection with WooCommerce
Customize the online ordering process
Enable inventory management and create pick-up process

SOLUTION

How did you find CoSpark?

Online Search

Why did you select CoSpark over others?

High ratings
Great culture fit

How many teammates from CoSpark were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Enable and customize WooCommerce connection.

Establish online ordering interface and checkout procedure.

Streamline inventory management.

Establish a pick-up procedure.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

Communications from CoSpark with client had to be clear, concise and informative.

Access to primary programmer at CoSpark was required by client, which CoSpark fulfilled readily.

User acceptance testing of established connection had to pass.

Post Go-Live support was provided readily.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

CoSpark was extremely responsive and if client asks to be educated, CoSpark readily complied. CoSpark also provided ideas to help new online businesses launch with current best practices.

Project management was clean and timely. Deliverables were met. If there were issues, communications were immediate.

What was your primary form of communication with CoSpark?

Virtual Meeting
Email or Messaging App

What did you find most impressive or unique about this company?

My primary programmer was willing to educate me on how online businesses work and provide valuable ideas when asked. He was more a partner in the business than a service provider.

Are there any areas for improvement or something CoSpark could have done differently?

No, since I am a very satisfied client.

RATINGS

5.0

E-Commerce Development
WooCommerce
+1
Confidential
Oct. 2023 - Ongoing

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"We're impressed by their efficiency and precision when solving any issues we encounter."

Oct 9, 2024

CEO, Hola Compras

Luis Marvez

eCommerce
Costa Rica
11-50 Employees
Online Review
Verified

CoSpark provides eCommerce development and optimization for an eCommerce company. The team is responsible for server hosting, WordPress integration, WooCommerce updating, and technical support.

Thanks to CoSpark's efforts, the client has seen an increase in server stability and a decrease in loading time. The team is efficient, precise, and responsive to the client's needs, and internal stakeholders praise their accuracy and results-driven approach.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am the CEO of Hola Compras

Describe what your company does in a single sentence.

E-commerce company.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire CoSpark to accomplish?

For better server performance
Integration development
Better user experience

SOLUTION

How did you find CoSpark?

Online Search

Why did you select CoSpark over others?

Certified in Wordpress and Woocomerce

How many teammates from CoSpark were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Helped us with server hosting
Wordpress optimization
Woocommerce plug-ins updates
Technical support

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

The server has been stable ever since we started working with CoSpark. There has also been decreased waiting time for loading screens. Finally, their technical support is efficient.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

We're impressed by their efficiency and precision when solving any issues we encounter.

What was your primary form of communication with CoSpark?

Virtual Meeting
Email or Messaging App

What did you find most impressive or unique about this company?

Their up to date knowledge and their support

Are there any areas for improvement or something CoSpark could have done differently?

No improvements needed.

RATINGS

5.0

E-Commerce Development Web Development
$10,000 to $49,999
May 2023 - Ongoing

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"They have a broad level of knowledge and skills and resolve issues quickly."

Oct 16, 2023

CEO, MBT World Inc

Dan Kelly

eCommerce
San Francisco, California
1-10 Employees
Online Review

CoSpark handles web development support for an online marketplace that allows users to sell and buy educational materials. They've fixed issues and bugs, improved page layouts, and added a quick search feature.

Thanks to CoSpark's efforts, the client has seen a consistent increase in daily visitors and sales; the amount of customer support requests has also decreased. The team ensures a smooth process by always addressing queries and requests quickly. They're also skilled, knowledgeable, and reliable.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am the CEO of MBT World, Inc.

Describe what your company does in a single sentence.

Madebyteachers.com is an ecommerce store for selling and buying digital resources for the educational marketplace.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire CoSpark to accomplish?

Fix existing performance issues and improve the user experience
Create a more modern search experience for users to increase sales

SOLUTION

How did you find CoSpark?

Online Search
Clutch Site

Why did you select CoSpark over others?

High ratings
Close to my geographic location
Pricing fit our budget

How many teammates from CoSpark were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Cospark fixed existing issues and bugs, updated and improved the layout on several pages, and resolved issues on our registration page. They also added a fast new search with autocomplete that is capable of quickly displaying results from more than 80k products on our website.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

The number of daily visitors and sales continues to increase, and the number of requests for help from customers has decreased. There are more sales and fewer issues.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

On smaller and urgent issues, CoSpark has always responded within minutes. The larger projects like implementing our new site search, took a little more time to complete but were delivered quickly and within the timeframe expected.

What was your primary form of communication with CoSpark?

Virtual Meeting
Email or Messaging App

What did you find most impressive or unique about this company?

We previously worked with developers who would take days to respond to email communication. With CoSpark, I've been able to communicate quickly and can use email, phone, chat, or video conferencing. They have a broad level of knowledge and skills and resolve issues quickly.

Are there any areas for improvement or something CoSpark could have done differently?

I'm not always sure which of the project managers I'm supposed to contact when I need help. Both project managers and the backend developers are great.

RATINGS

5.0

"Skilled Developers and Quick Communicaters"

Other Digital Marketing
Less than $10,000
March 2022

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"Heral and his team completed the template on the first try."

Mar 31, 2022

Owner, Apollo Mapping

Brock Adam McCarty

Business services
Berthoud, Colorado
1-10 Employees
Online Review
Verified

CoSpark (formerly AnnexCore) helped a mapping company design and create a new template in MailChimp using a PSD (Photoshop document) file.

CoSpark (formerly AnnexCore) completed the project ahead of time. Their perfect execution helped deliver the project successfully on the first attempt, which impressed the client.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

We are a company that sells satellite imagery and I am the owner of Apollo Mapping.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire AnnexCore, and what were your goals?

Heral helped us create a new template in MailChimp using a PSD file created by our designer.

SOLUTION

How did you select this vendor and what were the deciding factors?

This is the second time using Annex Core - they are great!

Describe the scope of work in detail, including the project steps, key deliverables, and marking tools used.

Heral designed a new MailChimp template for us.

How many resources from the vendor's team worked with you, and what were their positions?

We just worked with Heral.

RESULTS & FEEDBACK

Can you share any measurable outcomes of the project or general feedback about the deliverables?

Heral delivered an awesome MailChimp template quicker than he promised!

How effective was the workflow between your team and theirs?

100% effective - perfect communication.

What did you find most impressive or unique about this company?

Heral and his team completed the template on the first try.

Are there any areas for improvement or something they could have done differently?

Nope!

RATINGS

5.0

"We will be back for a third time :)"

Custom Software Development
Less than $10,000
Sep. - Oct. 2021

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"They have the ability to understand problems with no help from a client."

Oct 14, 2021

Analytics Manager, Reliance Home Comfort

Andrei Toumanov

Utilities
Toronto, Ontario
1,001-5,000 Employees
Online Review
Verified

CoSpark (formerly AnnexCore) was tasked with establishing an API software for a utilities service company. The vendor shares their prime service to make adjustments throughout the process.

The partners ran the processes within a few weeks into their partnership. CoSpark (formerly AnnexCore) provided concrete conversations without wasting time, showing the ability to understand the client's problems independently. Although, they would have benefitted more from creating a portal for sharing large files.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

Utilities services. I support a marketing analytics team.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire AnnexCore, and what were your goals?

One of the existing processes failed. We established that our API between an internal db and a vendor lost connectivity. The goal was fixing it.

SOLUTION

How did you select this vendor and what were the deciding factors?

Recommended by the vendor.

Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.

Not sure in which language the API was written. We shared its files with our Annex/Core prime who made adjustments, returned the files to us, after testing we concluded a successful process restoration.

How many people from the vendor's team worked with you, and what were their positions?

One person.

RESULTS & FEEDBACK

Can you share any measurable outcomes of the project or general feedback about the deliverables?

Within a few weeks our processes are running.

Describe their project management style, including communication tools and timeliness.

Very concrete conversations - no time wasted.

What did you find most impressive or unique about this company?

They have the ability to understand problems with no help from a client.

Are there any areas for improvement or something they could have done differently?

We had some issues sharing larger files. I recommend setting up a portal for that.

RATINGS

5.0

Custom Software Development
Less than $10,000
June - July 2021

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"CoSpark (formerly AnnexCore) demonstrated a high level of understanding in this specific area."

Oct 14, 2021

Group Publisher, Newsletter Station

Jeff Ferry

Media
Boston, Massachusetts
11-50 Employees
Online Review
Verified

CoSpark (formerly AnnexCore) was hired by a newsletter platform to assist in the development of their Mailchimp API. The project involved customized coding to interface with Mailchimp API.

Boasting a solid understanding of the project and the technologies used, CoSpark (formerly AnnexCore) successfully delivered the project on time and met the client's expectations. Responsive and accessible, they communicated effectively with the client throughout the engagement to ensure a seamless workflow.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

I am group publisher at Newsletter Station

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire AnnexCore, and what were your goals?

We hired AnnexCore to assist with complex API through Mailchimp.

SOLUTION

How did you select this vendor and what were the deciding factors?

AnnexCore has done many past projects.

Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.

The project included customized coding to interface with Mailchimp API

How many people from the vendor's team worked with you, and what were their positions?

2-3

RESULTS & FEEDBACK

Can you share any measurable outcomes of the project or general feedback about the deliverables?

The project was completed on time and met expectations.

Describe their project management style, including communication tools and timeliness.

Communication was clear, detailed, and timley.

What did you find most impressive or unique about this company?

AnnexCore demonstrated a high level of understanding in this specific area.

Are there any areas for improvement or something they could have done differently?

No improvements to offer.

RATINGS

5.0

Showing 11-20 of 21 Reviews

Our Story

We’re a tight-knit team of senior developers and project managers who work closely together on every project. That collaboration allows us to stay aligned, move efficiently, and deliver work that’s well thought through from the start.

Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

Learn More

Verified Client Reviews: 19

Overall Review Rating: 4.9

Source: Clutch

Last Updated: September 30, 2025

Business Entity

Business Entity Name	Annex Core, Inc.
Source	California Secretary of State
Jurisdiction of Formation	California
Date of Formation	March 10, 2010
Status	Active
Last Updated	July 3, 2021
ID	C3243619

Credit Report Results

International Credit Risk Assessment	Low Risk
Source	Creditsafe
Last Updated	March 19, 2023

Learn More About The Clutch Verification Process

Locations (2)

530 Technology Drive #100 Irvine, CA, United States 92618

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