One codebase, both stores, shipped in 12–20 weeks
Mobile App Development
Mobile app development is the engineering of iOS and Android applications — increasingly from a single React Native or Flutter codebase — covering UX, offline sync, push, payments and store distribution. AI Pinnacle ships fixed-price cross-platform apps for US, UK, EU and Gulf clients, with a 12-month post-launch warranty, and mobile products like ScanMyLaundry and PrepPro as proof.
What you get
- Cross-platform build (React Native or Flutter) — one codebase, iOS + Android
- Design system and store-ready UI for both platforms
- Offline-first data, push notifications, and real-time features where needed
- Payments, third-party integrations, and native modules (camera, geolocation, biometrics)
- App Store + Play submission, including review-rejection buffer in the timeline
- Crash reporting, analytics, and a 12-month warranty
How much does a mobile app cost in 2026?
A simple app (8–12 screens, auth, one integration) runs USD 32K–55K; a mid-complexity app (offline-first, push, payments, real-time chat/tracking, 3+ integrations) runs USD 65K–120K; a complex or regulated app (HIPAA/PCI, biometrics, on-device ML, AR, MDM) runs USD 140K–260K. We ship fixed-price in 12–20 weeks.
React Native, Flutter, or native — which should you pick?
Cross-platform (React Native or Flutter) saves 35–45% versus building twice in Swift and Kotlin, and it's the right call for the large majority of apps. Native still wins for heavy AR/ARKit, sub-16ms animation-critical UX, and deep Watch/Wear integration. We recommend per project rather than by default.
What do teams underestimate on mobile builds?
Three traps: building both platforms in parallel with two vendors (double the cost, half the consistency), skipping design-system work, and not budgeting for App Store review rejections — add about two weeks. We scope all three in, which is why the fixed price holds.
Can you add AI features to a mobile app?
Yes. On-device or API-backed AI — assistants, recommendations, vision — integrate behind your existing app. PrepPro, for instance, pairs a React Native app with an AI generation and adaptive-learning engine.
Engagement tiers & pricing
Fixed-price in 12–20 weeks with a 12-month post-launch warranty and 100% IP transfer. Cross-platform saves 35–45% versus building natively twice.
Simple App
USD 32K–55K
12–16 weeks
- 8–12 screens
- Auth + one integration
- Single cross-platform codebase
- Both stores
Mid-Complexity
USD 65K–120K
16–20 weeks
- Offline-first + push
- Payments
- Real-time (chat/tracking)
- 3+ integrations
Complex / Regulated
USD 140K–260K
20+ weeks
- HIPAA/PCI
- Biometric auth + on-device ML
- Native modules (camera/AR)
- Enterprise MDM distribution
Cross-platform vs native
| Criterion | React Native / Flutter | Native (Swift + Kotlin) |
|---|---|---|
| Cost | One codebase — 35–45% cheaper | Build twice |
| Best for | Most apps: business, commerce, logistics, EdTech | Heavy AR, sub-16ms UX, Watch/Wear |
| Time to two stores | 12–20 weeks | Longer — two codebases |
| Maintenance | Single codebase | Two teams, two release cycles |
Frequently asked questions
Should we build in React Native or Flutter?
Either delivers one codebase for both stores and saves 35–45% vs native. We pick based on your team, existing stack, and feature needs — React Native pairs naturally with a React/Node web product; Flutter shines for highly custom UI.
How long does a mobile app take to build?
12–20 weeks fixed-price for most apps, including the App Store review buffer. Complex or regulated apps run longer; we commit to the timeline in the statement of work.
Do you handle App Store and Play submission?
Yes — submission, store assets, and review-rejection handling are in scope, with roughly two weeks buffered for review cycles.
Can you take over or fix an existing app?
Yes. We audit the codebase, stabilize crashes and store-compliance issues, and extend from there, including adding offline sync, payments, or AI features.
Who owns the code?
You do — full source and IP transfer on completion, plus a 12-month warranty. NDAs signed before discovery.
Related insights
Mobile App Development Cost 2026 (iOS + Android): Real Numbers
iOS + Android build costs in 2026 across React Native, Flutter, and native — with the exact line items that make up a USD 60K vs USD 180K app.
React Native vs Flutter: Our 2026 Enterprise Verdict
After shipping 20+ enterprise mobile apps, here's our definitive framework comparison for cross-platform development.
AI-Powered Mobile Apps for New Zealand SMEs
Auckland and Wellington SMEs are quietly winning with React Native + on-device AI. Here's the playbook.
Other services
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