Mobile app development built to ship, not to sit in review
From MVP to App Store in 12-16 weeks. Our mobile app development team builds iOS and Android apps that work on real devices, survive real usage, and get approved on the first submission.
No commitment. 45 minutes. Walk away with a clear build plan.
The real cost of a bad mobile build
A poorly built mobile app does not just underperform. It actively damages your brand every time it crashes, freezes, or gets a 1-star review. Rebuilding after a failed first version costs 2x what a well-built first version would have. Because we have cleaned up enough of those messes, we build differently from day one.
What we build
iOS and Android
Native Swift and Kotlin, or React Native for cross-platform. We pick the right approach for your use case, whether you need deep OS integration or a shared codebase.
MVP apps
First version in 12-16 weeks. Enough to validate your concept, onboard your first users, and raise your next round.
Consumer apps
High-volume apps with real-time features, push notifications, payments, and social components built for scale.
B2B mobile tools
Internal tools, field service apps, and customer-facing portals with integrations to your existing systems. Similarly, we build companion apps for custom software platforms that extend your product to mobile.
What we shipped recently
NewPlay, a party booking app for venues, shipped in 14 weeks and processed its first 500 bookings within 30 days of launch.
A healthcare client’s field service app reduced paperwork time by 3 hours per technician per day.
GSD mobile apps have a 97% App Store and Google Play first-submission approval rate.
Brittney Whitecar, CEO of NewPlay, described working with GSD as going “from manual chaos to fully automated.” Her party booking app shipped in 14 weeks and handled its first 500 bookings without a single technical issue.
Fast Delivery
Native Performance
Scales With You
How we work
01. Define the MVP scope
Two weeks to map user flows, define the feature set, and agree on what ships in version one.
02. Build in 2-week sprints
You see working features every two weeks. Nothing goes dark for months, so you always know exactly where the project stands.
03. QA, submit, launch
Full device testing before submission. We handle App Store and Google Play guidelines through launch, including all compliance requirements.
Why teams choose GSD for mobile app development
You own the code
Full source code delivered at project end. No licensing fees, no vendor dependency.
Real device QA
We test on 30+ physical devices before submission. Simulator-only testing is how apps get rejected.
Post-launch support
90-day support window after launch. We are on call when your first users find edge cases.
Let’s build something people actually use
Projects start at $50K. We scope everything in writing before you commit. Whether you need a consumer app or a B2B tool, our SaaS development and mobile app development expertise means your project ships on time.
Ready to build your app?
Projects range from $50K to $120K depending on scope. You get a fixed-price quote before any work begins. No hourly billing. No scope surprises.
No commitment. 45 minutes. Walk away with a clear build plan.
What Our Clients Say
“GSD built us a custom management platform that boosted our project capacity by 43%. They didn't just deliver software, they delivered a growth engine.”
Who This Is For
We work best with teams who are ready to move.
Funded Startups
You have the capital and the vision but need a technical team that can execute at speed without wasting runway on false starts.
Growing Businesses
Your current systems are holding you back. You need custom technology that scales with your growth, not against it.
Teams Upgrading Legacy
Legacy code is costing you time and money. We modernize your stack while keeping your business running.
Zero-Risk Guarantees
- Sprint Satisfaction
If you are not satisfied with a sprint delivery, we will redo the work at no additional cost until it meets the agreed specification. - Full Code Ownership
Every line of code we write belongs to you from day one. No licensing fees, no proprietary lock-in, no strings attached. - No Lock-In
We build on open standards with full documentation. If you ever want to bring development in-house or switch vendors, you can walk away cleanly.
Ready to see how this works for your project?
Get My Fixed-Price Quote →Frequently Asked Questions
Everything you need to know before getting started.
Most projects follow 2-week sprint cycles. An MVP typically takes 8 to 16 weeks depending on complexity. We provide a detailed timeline during the discovery phase before any commitment.
After a free discovery call, we scope your project and provide a fixed price. No hourly billing, no surprise invoices. The price we quote is the price you pay. Period.
Yes, 100%. Every line of code, every design asset, every piece of documentation belongs to you from day one. We provide full source code access throughout the project.
We are stack-agnostic and choose the best tools for your project. Common choices include React, Next.js, Node.js, Python, Flutter, and AWS/GCP infrastructure. We recommend the right fit during discovery.
You get a dedicated project channel (Slack or Teams), weekly sprint demos, and direct access to your development team. No account managers playing telephone. You talk to the people building your product.
Scope changes happen. We handle them through a transparent change-order process. You will see the impact on timeline and cost before approving any changes. No surprises.
We offer flexible support packages including bug fixes, feature additions, and infrastructure monitoring. Many clients keep us on retainer for ongoing development after launch.
We are a focused team of senior engineers with 10+ years of average experience. We stay lean so every client gets senior-level attention, not junior developers learning on your dime.