🐙 Calda is an award-winning, AI-native product development company and an OpenAI Select Partner. We help startups, scaleups, and established organizations design, build, modernize, and scale mobile applications, web platforms, internal business systems, and AI-powered digital products.
With more than 100 digital products delivered and a 4.9 out of 5 rating on Clutch, Calda is known for its speed, quality, transparency, ownership, and commitment to going the extra mile.
🏆 Our team combines product strategy, UX/UI design, software engineering, and AI expertise to support clients from early-stage discovery through development, launch, and long-term product growth.
Calda has been recognized as FlutterFlow Agency of the Year in 2025 and 2026, FlutterFlow App Design of the Year in 2024 and 2026, and a Clutch Global Award winner. We are also certified partners and recognized experts across leading technologies, including FlutterFlow, Supabase, Stripe, RevenueCat, Expo, and Vercel.
🚀 Our Services
🤖 AI consulting and AI-native product development
📱 Mobile and web application development
🎨 UX/UI design and design systems
🧭 Product strategy and technical consulting
⚙️ Backend architecture and API integrations
🏢 Internal tools and business systems
🔄 Legacy platform modernization
📈 Product scaling and optimization
🛠️ Ongoing development and post-launch support
💻 Technology
We are technology-agnostic and business-first. Rather than forcing every project into a predefined stack, we select technologies based on the product requirements, timeline, security needs, technical complexity, and long-term business objectives.
Our technology experience includes Flutter, React, Next.js, Supabase, Firebase, Python, FlutterFlow, WeWeb, Stripe, RevenueCat, OpenAI APIs, and a broad range of third-party platforms and integrations.
Mobile App DevelopmentUX/UI DesigniPhone iOS App DevelopmentAndroid App Development
Pricing Snapshot
Min. project size
$10,000+
Avg. hourly rate
$50 - $99
/hr
Rating for cost
4.9
/5
What Clients Have Said
Calda offers competitive pricing and good value for cost, with clients noting their budget fit and high-quality deliverables. They typically engage small teams (2-10 members) and demonstrate strong project management, consistently meeting deadlines and adapting to client needs.
Calda stands out for their proactive approach and innovative solutions, often suggesting enhancements that clients hadn’t considered, which significantly contribute to project success.
Strong Project Management Skills
Clients frequently commend Calda for their excellent project management. The team is responsive, meets deadlines, communicates effectively through virtual and in-person meetings, and adapts to evolving project needs.
Great Culture Fit and Client Alignment
Calda is often chosen for their cultural fit and alignment with client values, which fosters a positive working relationship and enhances project outcomes.
Proficiency in App Development
Calda is consistently praised for their expertise in building production-ready apps, handling UI/UX design, backend development, and app deployment across various industries, from diabetes management to social networking and productivity tools.
Commitment and Dedication
The team’s commitment to delivering on time and their willingness to work long hours, including weekends and holidays, is highly valued by clients, especially under tight deadlines.
Room for Improvement in Communication Detail
A few clients noted that Calda could improve by providing more detailed communication, suggesting potential language barriers or the need for more in-depth project scoping.
"I was impressed with their ability to get the job done."
May 17, 2023
Founder & CEO, Shelter Locator App
Anonymous
Verified
Other industries
Oklahoma City, Oklahoma
Online Review
Verified
Calda was hired to build a mobile application from scratch. The app provided users with a list of nearby locations that offer shelter during a natural disaster.
Calda successfully delivered a functional app. They did a great job of touching base regularly with the client and producing exactly what was needed. Better scheduling could've improved their efficiency, but the team still provided satisfactory work. The partners communicated via virtual meetings.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Founder/CEO of a consumer products & services company
Describe what your company does in a single sentence.
We mobilized the community to connect with shelters before severe weather or other natural disasters.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire Calda to accomplish?
Build my no code app
SOLUTION
How did you find Calda?
Online Search
Why did you select Calda over others?
Pricing fit our budget
Describe the scope of work in detail. Please include a summary of key deliverables.
The app was built from the ground up. The team did a great job communicating and delivering what they promised.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
It’s still working
Describe their project management. Did they deliver items on time? How did they respond to your needs?
We ran over schedule, mostly due to publishing issues and different time zones.
What was your primary form of communication with Calda?
Virtual Meeting
What did you find most impressive or unique about this company?
I was impressed with their ability to get the job done.
Are there any areas for improvement or something Calda could have done differently?
Listen to the customer needs a in depth to make the best overall decision about their product.
RATINGS
4.5
Quality
5.0
Service & Deliverables
Schedule
3.0
On time / deadlines
Cost
3.5
Value / within estimates
Willing to Refer
4.5
NPS
Mobile App Development for PropTech Startup
Mobile App Development
Confidential
Nov. 2023 - Ongoing
4.5
Quality
4.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0
"They'll find a solution whenever a problem occurs."
Apr 6, 2023
Co-Founder, PropTech Startup
Anonymous
Verified
Real estate
Antwerp, Belgium
1-10 Employees
Online Review
Verified
Calda has developed a native mobile app's MVP for a proptech startup. The team has also set up the app's database endpoints, published the app on app stores, and carried out testing.
Calda has created a workable app that has enabled the client to conclude an inspection of their user journey. The team is easy to work with, solution-driven, and communicative through short feedback loops. Their commitment to delivering the highest level of quality stands out.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Co-founder of (a/an) Real estate
Describe what your company does in a single sentence.
We are a proptech startup commercializing different real estate management solutions.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire Calda to accomplish?
Discover new technology
Create a MVP
Develop custom components
SOLUTION
How did you find Calda?
Online Search
Why did you select Calda over others?
Great culture fit
Referred to me
What was the size of Calda’s team?
6-10 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Creation of a native mobile app
Setting up the DB modal and endpoints
Publication to the app stores
Testing
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
A workable mobile app
Possibility to conclude an 'inspection' the main customer journey
Describe their project management. Did they deliver items on time? How did they respond to your needs?
The team is very communicative and we work via short feedback loops. It was a pleasure working with them! They'll find a solution whenever a problem occurs.
What was your primary form of communication with Calda?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
Their persistence to finalize with the highest possible level of quality.
Are there any areas for improvement or something Calda could have done differently?
No - I believe they have the correct mindset to be very successful and continue to serve new and existing customers with great custom software development.
RATINGS
4.5
Quality
4.0
Service & Deliverables
Schedule
4.5
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
App Features Dev for Dinner Planning Company
Mobile App Development
$10,000 to $49,999
Oct. 2022 - Apr. 2023
5.0
Quality
5.0
Schedule
3.5
Cost
5.0
Willing to Refer
5.0
"They're a hungry startup and keen to learn."
Apr 5, 2023
Founder, The Dinner App
Anna Bay
Verified
Other industries
Australia
1-10 Employees
Online Review
Verified
A dinner planning app company hired Calda to help make their mobile app more flexible for end users. The team developed features such as dietary preferences, meal saving, and recipe search functionalities.
The client was pleased with Calda's work. The team managed the project well and was driven to make the project succeed for the client. Moreover, their professional approach was highly commendable. Overall, the engagement was successful.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Founder of The Dinner App
Describe what your company does in a single sentence.
Dinner Planning App
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire Calda to accomplish?
Make the app more flexible for users
Make it easier for me to update and manage the app
Make recipes dynamic
SOLUTION
How did you find Calda?
Referral
Why did you select Calda over others?
Referred to me
How many teammates from Calda were assigned to this project?
6-10 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Swap meals
Input dietary preferences
See versions of each meal - e.g. DF, GF, Vegetarian etc.
Save meals they like
Search for old recipes
Edit their shopping list across devices - e.g. partners can both edit the shopping list.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Swap meals
Dietary preferences
Save and edit meals
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Ver
What was your primary form of communication with Calda?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
Driven to succeed for their clients. They're a hungry startup and keen to learn. Professional approach. True partners.
Are there any areas for improvement or something Calda could have done differently?
Upfront project scoping should include the broader team so everyone is across the project.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
3.5
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
MVP Development for CRM Software Provider
Custom Software DevelopmentUX/UI Design
Less than $10,000
Jan. - Mar. 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"Their responsiveness and professionalism were impressive."
Apr 5, 2023
CEO, mindOS
Gabriele Morace
Other industries
Spain
1-10 Employees
Online Review
Calda built a CRM software provider's MVP using WeWeb and Supabase. They designed and implemented the wireframes.
Calda delivered the outputs on time. Their team was responsive and professional, which impressed the client. The vendor also ensured daily communication through email and messaging apps and led a final overview of the deliverables with a feedback session.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CEO of mindOS
Describe what your company does in a single sentence.
Personal CRM
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire Calda to accomplish?
Build MVP
SOLUTION
How did you find Calda?
Referral
Why did you select Calda over others?
Pricing fit our budget
Referred to me
How many teammates from Calda were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Wireframes for MVP
MVP build on weweb and supabase
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Day to day contact and final overview of delivery with feedback session.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Yes both on time and responded at all times.
What was your primary form of communication with Calda?
Email or Messaging App
What did you find most impressive or unique about this company?
Their responsiveness and professionalism were impressive.
Are there any areas for improvement or something Calda could have done differently?
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