Mobile App & Software Development Company in Atlanta, GA
Custom software, web and mobile app development for Atlanta businesses from a US-registered development company.
Your Atlanta Software Development Partner
Three Circle helps Atlanta businesses build custom software, web applications and mobile apps, as a US-registered company working remotely with clients in Metro Atlanta, with a UK office address.
A US company registered in Texas, working in US business hours.
Web, mobile, .NET, AI and cloud from one team.
Products used by thousands of people, including an HR platform with 5,000+ users.
App & Software Development for Atlanta Businesses
Portals, dashboards and internal tools built around your processes.
Customer-facing web apps and iOS, Android and Flutter mobile apps.
Software for fintech, healthcare, real estate, retail and more.
Scalable applications on Azure and AWS.
Regular demos, progress reports and one point of contact.
Maintenance, monitoring and improvements after launch.
Work with a US-Registered Development Team
Book a free online consultation and get clear advice, a realistic timeline and a transparent quote.
What We Build for Atlanta Businesses
From startups to established companies, we build software that helps Atlanta businesses grow:
Customer Portals and SaaS
Secure web platforms for your customers and partners.
Mobile Apps
iOS, Android and Flutter apps for customers and field teams.
Legacy Modernisation
Older systems upgraded to modern, supported technology.
Why Choose Three Circle in Atlanta?
Three Circle is a US-registered software company that works remotely with businesses across Metro Atlanta, so you get a US partner with the skills to deliver complete products.
US-Registered Company:
A US company registered in Sachse, Texas.
Full-Stack Expertise:
.NET, React, Angular, Node.js, Python, Flutter and native mobile.
Ongoing Support:
We stay with you after launch.
US and UK Coverage:
Working hours that cover both US and UK time zones.
Transparent Communication:
Regular demos, clear reports and honest estimates.
Reliable Delivery
Clear milestones keep your project on schedule.
Software Development Services in Atlanta, GA
Atlanta is a center for payments, logistics and healthcare technology, and its businesses need secure, integrated software that scales. Three Circle is a US software company, registered in Texas, that designs, builds and supports web applications, mobile apps, payment integrations and custom software for Atlanta companies. Our team works remotely with clients through video calls, shared project boards and regular demos, and our working hours cover both US and UK time zones.
Custom Software Development
Business applications, portals and internal tools built around how your team works. See our custom web development services.
ASP.NET and .NET Development
Secure enterprise applications and APIs on Microsoft .NET, plus .NET migration for legacy systems.
Mobile App Development
iOS, Android and Flutter apps for customers and field teams. See our mobile app development services.
AI and Chatbot Development
AI chatbots and LLM features that automate support and internal work.
Cloud and DevOps
Azure and AWS hosting, CI/CD and monitoring. See our cloud development services.
Software Consulting
Architecture reviews, technology roadmaps and project rescue from our software consultants.
Mobile App Development Company in Atlanta, GA
Looking for app developers in Atlanta? Three Circle is a US-registered app development company that builds iOS, Android and cross-platform apps for Atlanta startups and businesses. We work remotely, with calls and demos during Atlanta business hours (Eastern Time), and our rates start from $35 per hour.
Mobile App Development for Atlanta Businesses
Customer apps, booking and ordering apps, field-team apps and internal tools, built with Flutter for iOS and Android from one code base, or natively when needed.
Apps We Have Built
Optimized Strength, a fitness app with 1,000+ downloads, and the mobile app of an HR platform used by 5,000+ employees. See more in our portfolio and our US projects.
Start With an MVP
Get a free clickable design of 5-6 key screens; a starter MVP costs $3,000, or $1,500 when you claim the free design. See our MVP offer.
What an App Costs in Atlanta
Simple apps and MVPs usually cost less than complex platforms with payments, integrations and AI. See how much it costs to build an app, use our app cost calculator or book a free call for a written estimate.
Why Atlanta Businesses Choose Three Circle
- US-registered company: Three Circle is registered in Sachse, Texas.
- US working hours: our team overlaps with Eastern Time business hours for real-time calls and quick decisions.
- Proven remote delivery: clear sprints, demos and reports, so you always know where your project stands.
- Understanding of US business needs: security, compliance and the pace US companies expect.
- One team for everything: design, web, mobile, cloud and support from the same team.
Industries We Serve in Atlanta, GA
We build software for many of the industries that drive the Atlanta economy, including fintech and payments, logistics, healthcare, real estate, retail and eCommerce and education. See all industries we serve.
Areas We Serve
We work remotely with businesses across Metro Atlanta, including Atlanta, Alpharetta, Marietta, Sandy Springs, Decatur, Roswell, Duluth and Kennesaw, as well as clients across the rest of the United States.
We also work with businesses in Dallas, Austin, Houston, New York, Miami, New Jersey, Chicago, Los Angeles, San Francisco and California, and across the United States.
Three Circle (US registered address)
7119 Parkwood Dr, Sachse, TX 75048
Phone: +1 (832) 464-8175
Email: info@threecircle.io
Web Development Company in Atlanta
Alongside mobile apps, Three Circle is a web development company for businesses in Atlanta and across Georgia. We design and build business websites, online stores and custom web applications, then look after SEO and maintenance after launch. Website projects start from $1,000 and our rates start from $35 per hour.
Website Design and Development
Fast, mobile-first WordPress websites with clear calls to action, quote and booking forms, and on-page SEO. See the US websites we built for Foaming Foamtastic and Big Camel Printing, where 100% of the leads were qualified and turned into paid work.
Custom Web Application Development
Customer portals, dashboards, booking and ordering systems and internal tools built with ASP.NET Core, Node.js and React. See our custom web development services.
Website Redesign and SEO
Redesigns that keep your Google rankings, with redirects, speed fixes and local SEO for Georgia searches. See website design and development and the website cost calculator.
Software Projects We Have Built
HRM Platform and Mobile App Used by 5,000+ Employees
For a growing organisation we built a complete HR management platform: a web admin dashboard (React and Angular) for employee records, attendance and office operations, a Flutter mobile app for attendance and leave requests, and an ASP.NET Core API behind both. Result: more than 5,000 active users.
Optimized Strength: AI-Powered Fitness App with 1,000+ Downloads
Optimized Strength is a cross-platform fitness app built with Flutter for iOS and Android and a secure ASP.NET Core back end. It gives users more than 1,300 exercises, personalised AI coaching and progress tracking with visual charts. Result: 1,000+ downloads.
School3: School Management System with React, Flutter Web and .NET
School3 streamlines campus operations from one centralised admin dashboard: automated attendance, fee tracking and academic reporting. We built the web interfaces with React and Flutter Web on top of a secure .NET back end.
Want results like these? Tell us about your software project and get a free consultation.
Our Software Development Process
- Discovery: an online workshop to understand your goals, users and budget.
- Proposal: scope, timeline, team and a clear price.
- Design: wireframes and prototypes you can review before development.
- Development: two-week sprints with regular demos.
- Testing and launch: quality, security and performance checks before go-live.
- Support: maintenance, monitoring and new features.
Software Development Engagement Models and Pricing
Choose the way of working that fits your budget and timeline:
Fixed-Price Projects
Best for MVPs and projects with a clear scope. You agree on price, timeline and features before development starts.
Time and Materials
Flexible for products that will evolve. You pay for actual development time and can change priorities after every sprint.
Hire Dedicated Developers
Add experienced developers, designers and QA engineers to your team on a monthly basis for long-term development.
Want a quick budget? Use our app development cost calculator or request a free estimate.
Ready to Start Your Atlanta Software Project?
Book a free consultation and get a clear plan and quote for your software project.
- FAQs
Frequently Asked Questions
Three Circle is a US company registered at 7119 Parkwood Dr, Sachse, Texas. We work remotely with clients in Metro Atlanta and across the US through video calls, shared project boards and regular demos, and we have a UK office address in Poole, Dorset.
Custom software, ASP.NET and .NET development, web applications, iOS, Android and Flutter apps, AI chatbots, cloud solutions, UI/UX design and software consulting.
We work remotely using video calls, shared project boards and regular sprint demos, with one point of contact who keeps you updated.
Cost depends on features, platforms and integrations. Try our cost calculator or request a free estimate. Our rates start from $35 per hour and projects from $1,000.
Yes. We work with startups building their first product as well as established companies modernising or extending their systems.
Our team overlaps with US business hours, and our working hours cover both US and UK time zones.
We work with businesses across Atlanta, Alpharetta, Marietta, Sandy Springs, Decatur, Roswell, Duluth and Kennesaw, as well as clients across the rest of the United States.
Yes. We provide maintenance, security updates, monitoring and new features after your software goes live.
Yes. We build iOS, Android and Flutter apps for Atlanta businesses and startups. We are registered in Texas and work remotely, with calls and demos in Eastern Time.
Our rates start from $35 per hour, and a starter MVP costs $3,000 ($1,500 with our free design offer). Larger apps are priced by scope after a free call.