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Mobile, Web, and AI Development

Semaphore Mobile is a Dallas-based software development firm specializing in custom web, mobile, AI, and IoT solutions. Since 2002, we’ve helped companies design and build scalable digital products that solve real business problems, from consumer-facing mobile apps to complex internal platforms and connected device ecosystems.

  • Min project size
    $5,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    10 - 49
  • Locations
    Plano, TX
  • Year founded
    Founded 2002
  • Languages

Overview by:

Reviewer avatar
Jonah Silverthorn
Director of Sales and Operations About the Team

1 Language that we service

  • English

1 Locations

  • Plano , TX

Industries
Business services
20%
Consumer products & services
15%
Energy & natural resources
10%
Financial services
10%
Medical
10%
eCommerce
10%
Advertising & marketing
5%
GPS, Navigation & GIS
5%
Information technology
5%
Manufacturing
5%
Media
5%
Clients
Midmarket ($10M - $1B)
50%
Small Business (<$10M)
40%
Enterprise (>$1B)
10%
Certified in:
Mobile App Development

Pricing Snapshot

Min. project size $5,000+
Avg. hourly rate $50 - $99 /hr
Rating for cost 4.9 /5

What Clients Have Said

Semaphore Mobile offers competitive pricing, with project costs ranging from $7,000 to over $200,000. Clients appreciate the value for cost, citing excellent communication, project management, and a genuine commitment to success, making them a highly recommended development partner.

This summary is based on verified Clutch reviews.

Most Common Project Size

$10,000 - $49,999 based on 15 reviews
< $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

Select a service to see pricing information

Semaphore Mobile Review Insights

Overall Review Rating

5.0
  • Quality 5.0
  • Schedule 4.9
  • Cost 4.9
  • Willing to Refer 5.0

Top Mentions

Review Highlights

  • Responsive and Timely Communication

    Semaphore Mobile is commended for their timely communication, consistent updates, and responsiveness. They are proactive in addressing queries and concerns, ensuring clients are always informed.

  • Proactive Problem Solving

    Semaphore Mobile is proactive in identifying issues and providing solutions, ensuring projects run smoothly and clients' needs are met effectively.

  • Effective in Complex Projects

    Semaphore Mobile handles complex projects with ease, including cross-platform systems and integrations, demonstrating their capability to manage intricate development tasks.

  • Room for More Structured Meetings

    A client suggested more structured meetings, such as weekly or bi-weekly sessions, for enhanced scope and idea discussions, indicating a potential area for improvement.

  • Genuine Interest in Client Success

    The team shows genuine interest in client projects and success, going beyond just fulfilling requirements to actively contributing ideas and improvements.

  • Strong Client Relationships

    Clients praise Semaphore Mobile for building strong, personal relationships. They feel valued, as if they are the most important client, which is rare in today's business world.

Semaphore Mobile Reviews

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Industry
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Mobile App Development for Social Media Platform

  • Mobile App Development
  • $50,000 to $199,999
  • Aug. 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0

"I definitely plan to keep them on after I launch as I don't really trust another company to do this good of a job."

Jul 15, 2021
Founder, Social Networking Platform
Derrick Anene
Verified
  • Other industries
  • Dallas, Texas
  • 1-10 Employees
  • Online Review
  • Verified

Picking up from a previous vendor, Semaphore Mobile is developing a mobile app for a social networking platform. The app's features include commenting and point systems, profile pages, a ranking page, and more.

Mobile App Dev for Aviation Training Company

  • Mobile App Development
  • iPhone iOS App Development
  • $50,000 to $199,999
  • May 2018 - Ongoing
5.0
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0

“Our system isn’t like anything on the market, and they were able to turn that complex idea into an excellent product.”

Apr 20, 2021
President, AT Systems, LLC
Tyler Phillips
Verified
  • Automotive
  • Tulsa, Oklahoma
  • 1-10 Employees
  • Phone Interview
  • Verified

Semaphore Mobile developed and designed a mobile app for an aviation training company. The team continues to provide system improvements and enhancements.

Mobile App Planning & Budget for Business Services Company

  • Mobile App Development
  • $10,000 to $49,999
  • Aug. - Nov. 2020
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Our client is very happy with their work product."

Mar 8, 2021
Director of Engineering and Operations, Business Services
Larry Defauw
Verified
  • Other industries
  • Falls Church, Virginia
  • 1-10 Employees
  • Online Review
  • Verified

A business services company tapped Semaphore Mobile to provide an estimate on a mobile app and backend development project for one of their clients.

Mobile App Development for Gift Giving App

  • Mobile App Development
  • Consumer Mobile App Development iPhone iOS App Development
  • $10,000 to $49,999
  • June 2019 - Ongoing
5.0
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0

"Hire Semaphore — they really care about the product and the process."

Jan 20, 2021
Founder, Avvee LLC
Christina Vela
Verified
  • Other industries
  • Dallas, Texas
  • 1-10 Employees
  • Phone Interview
  • Verified

Semaphore was contracted to build an iOS gift-giving mobile app. The team managed the project from start to finish, adding a range of features and functionalities. 

Alexa Application Development for an Innovations Product Company

  • Custom Software Development
  • Other app platform
  • Confidential
  • Aug. 2017 - Jan. 2019
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

“They worked all hours of the day or night, and we couldn’t have achieved our goals without them.”

Jan 29, 2019
President, Idea Planet
Michael Flecker
Verified
  • Advertising & marketing
  • Dallas, Texas
  • 11-50 Employees
  • Phone Interview
  • Verified

Semaphore Mobile created a cross-platform system for web, iOS, and Android from scratch that shuttles data between users and Amazon’s Alexa Voice Service.

E-Commerce Site Development for Software Company

  • Custom Software Development
  • Ruby on Rails JavaScript
  • $10,000 to $49,999
  • Jan. - Nov. 2018
5.0
Quality
4.5
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

“They stand out just by being straightforward.”

Jan 28, 2019
Managing Member, Software Company
Mark
Verified
  • Other industries
  • Birmingham, Alabama
  • 11-50 Employees
  • Phone Interview
  • Verified

Semaphore Mobile built e-commerce features for a web-based platform, including quotation and order fulfillment functionality. They used Ruby on Rails and JavaScript.

Web Design & Dev for Makeup Services & Watch Rentals Company

  • Web Design Web Development
  • Confidential
  • Mar. 2026 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Semaphore Mobile's project management is awesome."

Jun 23, 2026
Co-Founder & COO, GlamPro
Michael Williams
Verified
  • Beauty
  • Texas, United States
  • 1-10 Employees
  • Online Review
  • Verified

Semaphore Mobile has designed and developed a website for a makeup services and watch rentals company. The team has created five curated pages and contact forms for the client's trade show experience.

Web & Mobile App Dev & Design for AI Platonic Friend Company

  • Mobile App Development UX/UI Design Web Development
  • $10,000 to $49,999
  • Nov. 2025 - Ongoing
5.0
Quality
4.5
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Semaphore Mobile's clarity in explaining each step stands out."

Jun 22, 2026
Co-Owner, MNBF, LLC
Gary Dubuisson
  • Consumer products & services
  • Rochelle, Texas
  • 1-10 Employees
  • Online Review

Semaphore Mobile has designed and developed a website and an app for an AI platonic friend company. The team is also responsible for publishing the app on the Apple App Store and Google Play Store.

Mobile App Dev for Pivot Monitoring Company

  • Mobile App Development UX/UI Design
  • Confidential
  • Jan. 2022 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The team has consistently proven to be available and helpful."

Feb 5, 2024
Senior Programmer Analyst, PivoTrac Monitoring
Anonymous
Verified
  • Other industries
  • Dalhart, Texas
  • 1-10 Employees
  • Online Review
  • Verified

A pivot monitoring app has hired Semaphore Mobile for mobile app development. The team worked with the client's backend team to improve the UX and add new features to the application.

Mobile App Development for Agriculture Co

  • Marketing Strategy Mobile App Development
  • Consumer Mobile App Development iPhone iOS App Development
  • $10,000 to $49,999
  • Sep. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"They are very attentive and timely."
Jan 31, 2024
Executive, Jd Todd LLC
Anonymous
  • Other industries
  • Norman, Oklahoma
  • Online Review

An agriculture company has hired Semaphore Mobile for mobile app development. The team has taken care of planning and documentation for user stories, design and development, and testing and deployment.

Showing 11-20 of 22 Reviews

Our Story

Founded in 2002, Semaphore Mobile was the first mobile development firm in Texas, beginning in telecommunications and building systems for Nokia and BlackBerry. In 2007, ahead of the App Store launch, we built and launched Craigslist’s mobile app. Since then, our team has contributed to projects for GasBuddy, ACE Cash Express, Transamerica, Google, and more. Today, we continue to evolve with our clients, providing expert mobile, web, IoT, backend, QA, and design services.

Meet the Team

Eric Silverthorn

Eric SilverthornCEO

Eric brings deep technical leadership and decades of experience building software systems across mobile, web, IoT, and backend platforms. Since Semaphore Mobile’s early days, he has helped guide the company through major shifts in technology, from ea

Jeff Owens

Jeff OwensDirector of Technology

Jeff plays a key role in leading client strategy, project planning, and delivery at Semaphore Mobile. With a strong understanding of both business goals and technical execution, he helps clients clarify requirements, prioritize features, and move pro

Jonah Silverthorn

Jonah SilverthornDirector of Sales and Operations

Jonah helps lead client relationships, sales, and project discovery for Semaphore Mobile. He works closely with clients to understand their goals, define project scope, and connect them with the right technical resources across mobile, web, IoT, back

What Sets Us Apart

20+ years of development experience

We are not just developers. We are product partners with 20+ years of experience turning complex ideas into real software. From early mobile systems to apps used by millions, we know how to guide strategy, design, development, QA, and launch with clarity and accountability.

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
5
Source
Clutch
Last Updated
July 12, 2026

Business Entity

Business Entity Name Semaphore Mobile, LLC
Source Texas Comptroller of Public Accounts
Jurisdiction of Formation Texas
Date of Formation February 13, 2008
Status Active
Last Updated December 15, 2022
ID 0800937352

Credit Report Results

International Credit Risk Assessment Low Risk
Source Creditsafe
Last Updated December 15, 2022
Learn More About The Clutch Verification Process

Locations (1)

5960 W. Parker Road Suite 278 #134 PlanoTX, United States 75093

10 - 15

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