Mobile App Development for iOS and Android — in 90 days.
Senior React Native and Flutter developers building production iOS and Android apps. Fixed price. Store launch included. The MVP your investors can install on their phone.
- React Native + Flutter expertise
- iOS + Android in one codebase
- App Store + Play Store submission included
- 90-day post-launch warranty
11 weeks
iOS + Android app to App Store launch · $35k fixed-price · 4.8★ rating in week 1
“Senior engineers, weekly demos, zero scope creep. After three failed agency attempts, this finally felt like working with a team that actually ships.”
Priya Raman
CTO, Halo Health
90% of mobile apps shipped in 2026 should be cross-platform. The other 10% should be fully native — and most founders don't know which one they are. We'll tell you on the first call, in plain English, with a fixed price for each path.
We've shipped over 200 production mobile apps — consumer marketplaces, B2B field apps, e-commerce, AI-powered apps. Want to embed a GPT-powered assistant inside your app? Our AI agent team handles that. Need a companion web app and admin? Our web development team ships them in parallel. One team. One timeline. One fixed quote.
Book a free 30-minute strategy call and we'll quote your app in writing within 48 hours.
Is your mobile app right for this team?
A blunt check before you book a call.
This is for you if…
- You have a hard launch date — board meeting, App Store feature, conference launch
- iOS and Android both matter — not one platform first
- You want fixed price including App Store + Play Store submission
- You want React Native + native-module expertise (not just web devs trying mobile)
- You'll keep us on a retainer for OS updates & framework upgrades
This is NOT for you if…
- Budget is < $12k — consider templates / no-code
- You need it shipped in 4 weeks (timeline is unrealistic, we'll say no)
- You only want iOS, Android is "next year" — we ship both at once
- You expect to design as you go without wireframes
What we build
Four mobile patterns cover what 90% of founders need.
Consumer apps & marketplaces
Two-sided marketplaces, social apps, content apps. Push notifications, offline mode, deep linking — done right.
E-commerce & shopping apps
Native mobile commerce with Stripe / Apple Pay / Google Pay, push retargeting, and AR product previews.
B2B field apps & internal tools
Offline-first sales apps, inventory apps, inspection apps. Built for spotty connectivity and rugged use.
AI-powered mobile apps
GPT / Claude integrations with voice, image recognition, document scanning. The next-generation mobile UX.
Our 90-day delivery process
No discovery loops. No scope creep. You see working software every week.
- Week 1
Step 1
Strategy + scope sprint
UX flows, technical architecture, App Store strategy. You approve before code starts.
- Weeks 2–6
Step 2
Core build
Auth, primary features, navigation, offline storage. TestFlight / Internal Testing builds every Friday.
- Weeks 7–10
Step 3
Polish + integrations
Push notifications, payments, analytics, deep linking, dark mode, accessibility. Full QA pass.
- Weeks 11–12
Step 4
Store launch
App Store + Play Store submission, marketing screenshots, review responses, post-launch monitoring.
Our tech stack
Built with the same tools the best engineering teams in the world use today.
Frameworks
- React Native
- Expo
- Flutter / Dart
- Swift / SwiftUI
- Kotlin / Jetpack Compose
State & data
- Zustand / Redux Toolkit
- TanStack Query
- Riverpod (Flutter)
- SQLite / Realm
- WatermelonDB
Backend
- Node.js / tRPC
- Firebase / Supabase
- AWS Amplify
- GraphQL
- REST + WebSockets
Infra & analytics
- App Store Connect / Play Console
- EAS Build & Submit
- Sentry / Bugsnag
- Mixpanel / PostHog
- OneSignal / Firebase
The boring stuff, done right
Compliance, IP, contracts — the parts most agencies hand-wave.
SOC 2 architectures
Audit-ready by Day 90
HIPAA-aware builds
BAA-eligible cloud regions
GDPR + PIPEDA
EU + Canadian data residency
You own the code
IP transfer Day 1
Fixed-price contracts
Quoted in 48 hours
90-day warranty
Bugs fixed free post-launch
Estimate your mobile build in 60 seconds
Free MVP Cost Calculator. Pick mobile, complexity, and features — see fixed-price range and timeline based on 200+ shipped mobile apps.
Open the MVP Cost CalculatorEstimated
$28k–$48k
typical fixed price for a polished iOS + Android v1
Transparent, fixed-price engagements
No hourly billing. No surprises. Quoted in writing within 48 hours.
MVP App
Cross-platform MVP. One core feature. iOS + Android. 8-week delivery.
- React Native or Flutter
- Auth + 1 core flow
- Basic backend (Firebase / Supabase)
- TestFlight + Internal Testing
- 90-day warranty
Production App
Polished v1. Store launch ready. 12-week delivery.
- Everything in MVP
- Push notifications
- In-app purchases / Stripe
- Offline mode + sync
- Analytics + crash reporting
- App Store + Play Store launch
- 30 days on-call support
Native / Complex
Fully native, AR, BLE, video pipelines, complex hardware integrations.
- Everything in Production
- Native iOS (Swift) + Android (Kotlin)
- BLE / AR / hardware integrations
- Custom video / image pipelines
- Dedicated team 4–6 months
Available in 8 countries, 22+ cities
View all locations →Frequently asked questions
The questions we get on every first call — answered.
- A fixed-price MVP for iOS + Android runs $15,000–$45,000. A polished v1 with offline mode, push notifications, in-app purchases, and 2 backend integrations runs $35,000–$80,000. Enterprise apps with custom hardware, BLE, or AR can run $80,000+.
- React Native if you have web React expertise already, want to share code with web, or need access to the latest JS ecosystem. Flutter for pixel-perfect UI, smoother animations, and when you want one codebase that looks identical on iOS and Android. We'll recommend on your strategy call.
- 90 days for MVP, 5 months for polished v1. App Store review typically takes 24–48 hours once submitted. We handle App Store Connect setup, screenshots, and submission as part of the engagement.
- We build both. Cross-platform (React Native / Flutter) is right for 90% of apps and saves you 40% vs going fully native. We go native when you need deep BLE, AR, custom video pipelines, or 60fps gaming.
- We do. Apple Developer account setup, store listing copy, screenshots, app review responses — all included. Most apps clear review on first submission.
- Yes — and that's one of our most-requested features in 2026. Our AI agent team wires GPT-4 / Claude into mobile experiences with streaming responses, voice input, and offline caching.
- Optional monthly retainer ($3,500/mo and up) — covers OS updates (iOS, Android), framework upgrades, bug fixes, and minor feature work. Most clients keep us on for 6–12 months post-launch.
Your mobile app, in users' hands, in 90 days.
30 minutes. Zero pressure. Leave with clarity — even if we never work together.
Book My Mobile Strategy Call