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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 is praised for their competitive pricing and strong value for cost. Projects range from $7,000 to $100,000, with clients appreciating their responsiveness and project management. Many clients highlight satisfaction with deliverables and ongoing support, indicating good ROI.

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

  • Cost-Effective Services

    Several reviews highlight Semaphore Mobile's competitive pricing and value for money, making them an attractive option for businesses seeking budget-friendly development solutions.

  • Strong Customer Communication

    Semaphore Mobile is noted for excellent communication skills. They maintain constant contact with clients through various channels, ensuring clarity and quick responses to queries and issues.

  • Strong Understanding of Client Vision

    Semaphore Mobile excels at understanding and executing the client's vision, often translating complex ideas into successful products that align with client goals.

  • Genuine Client Partnership

    Clients appreciate Semaphore Mobile's genuine interest in their projects, often describing the company as a partner rather than just a service provider. Their dedication to client success is a recurring theme.

  • Minor Suggestions for Improvement

    One client suggested more regular meetings for an all-hands-on-deck approach to enhance project scope discussions. This indicates a potential area for increased client engagement.

  • Adaptable and Flexible Approach

    Semaphore Mobile's flexibility in adapting to client needs and working with existing systems or teams is highly valued. They have proven capable of integrating into ongoing projects smoothly.

Semaphore Mobile Reviews

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Industry
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Mobile App Development for Gift Giving App

  • Mobile App Development
  • Consumer Mobile App Development
    +1
  • $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
  • Amazon Application Development Framework
    +1
  • 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
    +1
  • $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 & UX/UI Design for Outdoor Experiences Co

  • Mobile App Development UX/UI Design
  • Confidential
  • Apr. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Semaphore Mobile’s level of communication and ability to take a vision and bring it to life is impressive."

Jun 22, 2026
Owner, ExploreMore
CJ Cottey
Verified
  • Recreation
  • Dallas, Texas
  • 1-10 Employees
  • Online Review
  • Verified

Semaphore Mobile provides mobile app development and design services for an outdoor experiences company. The team has built an app and backend software and implemented geofenced locations.

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
    +1
  • $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.

Web & Mobile App Development for Business Analytics Company

  • Application Management & Support Custom Software Development Enterprise App Modernization Mobile App Development
  • Other app platform
    +2
  • Confidential
  • Aug. 2022 - June 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We were impressed with their ability to creatively solve our unique problems quickly."

Jun 29, 2023
Director, Athena Intelligence Group
Anonymous
  • Other industries
  • Washington, District of Columbia
  • 11-50 Employees
  • Online Review

A business analytics company hired Semaphore Mobile to build a two-factor authentication app for iOS, Android, and web platforms.

Showing 11-20 of 21 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
18
Overall Review Rating
5
Source
Clutch
Last Updated
June 23, 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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