Mobile App Development for US Startups & SMBs
We design and ship native iOS, native Android, and cross-platform apps with Flutter and React Native. AI-assisted engineering gets a launchable build in your hands in weeks, not months, with senior engineers you talk to directly and full ownership of all code and IP.
What We Build
End-to-end mobile app development, from a first MVP to rescuing an app that stalled, across every platform US teams ship on.
Native iOS Development
High-performance iPhone and iPad apps in Swift and SwiftUI, built for the Apple ecosystem and App Store review on the first pass.
- Swift & SwiftUI
- Apple Pay & Sign in with Apple
- App Store submission & ASO
Native Android Development
Robust Android apps in Kotlin and Jetpack Compose, tuned for the full range of devices, form factors, and Play Store policies.
- Kotlin & Jetpack Compose
- Google Play Services
- Material Design 3
Cross-Platform (Flutter & React Native)
One codebase, both stores. The pragmatic path for most startups: ship iOS and Android together far more cost-effectively than two native builds.
- Flutter & Dart
- React Native
- Shared business logic
MVP & Product Apps
Get a launchable, investor-ready app in front of real users fast, scoped to the core flow, instrumented, and ready to iterate.
- Core-flow first
- Analytics & feedback loops
- Built to scale past launch
Backend & API Integration
The server side your app depends on: auth, sync, payments, notifications, and clean APIs on AWS, GCP, or Firebase.
- REST & GraphQL APIs
- Auth, payments & push
- Real-time sync & offline
App Rescue & Modernization
Inherited a stalled or buggy app? We audit it, stabilize the release, and modernize the architecture without a reckless rewrite.
- Code & release audit
- Performance & crash fixes
- Incremental modernization
Native or Cross-Platform? How to Decide
The biggest early decision, and the one that drives cost and timeline. Here's the honest version. Most startups should start cross-platform; some apps genuinely need native. We help you make the call in discovery, before any budget is committed.
Choose cross-platform (Flutter / React Native) when…
- You want iOS and Android live together from one codebase
- You're shipping an MVP or validating demand on a budget
- Your app is content, commerce, workflow, or CRUD-driven
- Speed to market and a tight roadmap matter more than platform-specific polish
Choose native (Swift / Kotlin) when…
- You need the absolute best performance or heavy device hardware use
- AR, advanced camera, Bluetooth, or real-time graphics are core
- You depend on day-one access to the newest OS features
- A platform-perfect feel is a competitive differentiator
How We Start: Fixed Scope, Fast
We don't lead with open-ended retainers. Every engagement starts with a focused, fixed-scope sprint, so you get a clear deliverable and a real estimate before any long-term commitment.
App Discovery Sprint
- Scope, flows & platform recommendation
- Native vs. cross-platform decision
- Architecture, timeline & fixed estimate
MVP App Sprint
- Launchable iOS + Android build
- Core user flow, backend & analytics
- App Store & Play Store submission
App Rescue & Audit
- Full codebase & release audit
- Crash, performance & security fixes
- Stabilized build + modernization roadmap
Every engagement starts with a fixed-scope sprint and a clear deliverable. You get a concrete estimate before any long-term commitment.
Why US Teams Choose MicroPyramid
You're not hiring a 500-person body shop with a rotating bench. You get a focused, senior team that ships.
AI-Assisted, Weeks Not Months
We build with AI across coding, testing, and review, so working app builds land in weeks, not the months a traditional agency quotes.
Senior Engineers, Direct
You work with the people writing the code, not account managers or a rotating bench of juniors handed your project.
You Own Code & IP
Full source code, IP, and store accounts are yours from day one. We sign NDAs and IP-assignment before work begins.
US Time-Zone Overlap
Daily overlap with ET/PT for standups, demos, and reviews. Async-friendly, but reachable when you need a real conversation.
How We Build Your App
A proven four-stage process with weekly demos and senior review, so you always know exactly where your app stands.
Discovery & Scope
Requirements, user flows, platform decision, and a fixed estimate before a line of code is written.
Design & Architecture
Wireframes, UI design, and the backend/API architecture your app will stand on.
AI-Assisted Build
Sprint-based development with weekly demos, TestFlight/Play builds, and senior review on every change.
Launch & Support
App Store and Play Store submission, monitoring, and ongoing iteration after release.
The Mobile Stack We Build On
Current, well-supported tools across iOS, Android, cross-platform, and the backend your app runs on.
iOS
Android
Cross-Platform
Backend
Proof, Not Just Promises
12+ years building software, 50+ projects delivered, and long-term clients who keep coming back. See how we build across product engineering and AI in our portfolio.
"Ashwin and MicroPyramid have consistently and professionally delivered to my ever-changing specifications. Project changes are met with cheerfulness and enthusiasm. They are quick to deliver and have an in-depth knowledge of the industry."
Mobile App Development FAQs
Straight answers to what US founders and CTOs ask us before starting an app project.
What drives the cost of a mobile app?
The main drivers are scope and feature count, the complexity of your flows and data model, the number of integrations, whether you build native or cross-platform, and any compliance requirements. A focused MVP costs far less than a moderately complex app with backend and accounts, which in turn costs less than a large multi-feature or enterprise app. We give a fixed estimate after a short discovery sprint, and a cross-platform build (one codebase for iOS and Android) is far more cost-effective than building two native apps.
How long does it take to build a mobile app?
We ship a launchable MVP in roughly 4-8 weeks and larger apps in a few months, faster than the 6-12 months traditional agencies quote, because we use AI-assisted engineering across coding, testing, and review with senior oversight on every change.
Should I build native or cross-platform?
Choose cross-platform (Flutter or React Native) for most apps (MVPs, content, commerce, and workflow apps) to ship iOS and Android together from one codebase at lower cost. Choose native (Swift or Kotlin) when you need maximum performance, heavy device-hardware use like AR or advanced camera, or day-one access to the newest OS features. We help you make this call in discovery, before any cost is committed.
Do you build both iOS and Android?
Yes. We build native iOS (Swift/SwiftUI), native Android (Kotlin/Jetpack Compose), and cross-platform apps with Flutter or React Native, and we handle both App Store and Google Play submission for you.
Who owns the source code and app store accounts?
You do. You retain full ownership of the source code, IP, and your own Apple and Google developer accounts. We sign NDAs and IP-assignment agreements before work begins.
Do you work with US companies and what about time zones?
Yes. Most of our clients are US-based startups and SMBs. We keep several hours of daily overlap with US time zones (ET/PT) for standups, demos, and reviews, and you work directly with the senior engineers building your app.
Can you fix, rescue, or take over an existing app?
Yes. We audit the codebase and release, stabilize crashes and performance issues, and modernize the architecture incrementally, without a risky full rewrite. Many engagements start as an app rescue and audit.
Do you provide support and maintenance after launch?
Yes. After launch we handle OS updates, store-policy changes, monitoring, bug fixes, and new features, on a flexible ongoing basis rather than a locked-in retainer.
Explore Related Services
Specialized engineering teams for the platforms and stacks your app depends on.
Ready to Build Your App?
Book a free discovery call. We'll talk through your idea, recommend native or cross-platform, and give you a fixed scope and estimate, no obligation.