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Mobile app development for apps that actually ship
Native iOS, native Android, React Native, Expo. The right approach picked per project — not religiously. Senior engineers shipping apps that pass App Store review, run smoothly on real devices, and grow with your business.
Mobile apps shipped to the App Store — not just demoed
Six mobile build patterns
iOS, Android, cross-platform — chosen for the project, not based on what we like.
React Native + Expo
Cross-platform apps from one codebase. Expo for speed and OTA updates; bare React Native when you need native modules. The default for most product-stage builds.
See approachiOS native (Swift / SwiftUI)
Native iOS for apps where Apple-platform features matter — Live Activities, Widgets, ARKit, deep WatchKit integration. The right call for premium iOS-led products.
See approachAndroid native (Kotlin)
Native Android with Jetpack Compose, Material 3, Kotlin coroutines. For products where Android-specific behaviour, performance, or hardware integration matters.
See approachAI-native mobile features
LLM-backed assistants inside your app, on-device ML for offline / privacy use cases, vision and audio AI. Built with the cost and battery discipline mobile demands.
See examplesBackend + sync layer
The backend that powers a mobile app — auth, sync, offline-first, push, background tasks. Often the harder half of a mobile build.
See approachExisting app modernisation
You have a Cordova / Ionic / old React Native app that's painful to maintain. We migrate to a modern stack incrementally, without losing your existing users.
See approachSix steps from concept to App Store
App Store review and Play Store policy realities live in this process. We plan for them up front.
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01
Discovery
User journey, monetisation, platform decision, key flows. Output: a build brief that includes App Store / Play Store policy considerations.
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02
Architecture
Native vs cross-platform decision, sync strategy, offline-first model, push architecture, analytics. Decided before any UI work.
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03
Design + prototype
Figma mobile flows, platform-appropriate (iOS Human Interface, Material 3). Clickable prototype on real device by end of week 2.
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04
Build sprints
Two-week sprints, TestFlight + Firebase distribution from sprint one. You install builds on your phone, not just see screenshots.
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05
Real-device QA
Test on the actual device matrix your users run — not just the latest iPhone. Battery, memory, dark mode, accessibility, offline behaviour all checked.
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06
Store submission
App Store + Play Store assets, descriptions, review-ready binary. We handle the submission and reply to reviewer questions for the first round.
How we approach mobile app development
Jump straight to what you came for — every chapter unpacks a piece of how we ship websites that move the needle.
When native is worth the extra cost
The native vs cross-platform debate has cooled in 2026, and the right answer is more situational than ever.
Native iOS / Android wins when your app depends on platform-specific features (Live Activities, Widgets, deep ARKit, advanced background tasks, hardware integrations) or when extreme performance / battery efficiency are competitive advantages. The cost is roughly 1.6-1.8x of one cross-platform codebase — you build the same thing twice — but the ceiling is higher.
Cross-platform (specifically React Native + Expo) wins for the vast majority of product-app briefs in 2026. The performance gap has effectively closed for most workloads, Expo OTA updates dramatically improve iteration speed, and one team can ship to both stores.
Why React Native + Expo is the default for most product apps
The "React Native is a toy" critique from 2018 stopped being true around 2022. By 2026 it's genuinely the production-grade choice for most use cases.
The New Architecture (Fabric + TurboModules) closed most of the performance gap. Expo SDK 51+ makes builds, OTA updates, native modules, and EAS submission trivially smooth. The hiring pool is enormous and your existing web React engineers can contribute. Apps in production at Meta, Shopify, Discord, Coinbase, Microsoft Office — this is not a toy.
Where we still avoid React Native: anything genuinely AR/VR-heavy, anything requiring custom audio/video processing at low latency, anything where on-device ML inference is the core product.
AI features on mobile — what actually works
Mobile AI in 2026 splits cleanly into "cloud LLM via API" and "on-device ML." Different problems, different constraints.
Cloud-API AI (Claude, GPT) is right when you need state-of-the-art reasoning and the user is online. Streaming responses fix the latency-perception problem. The challenge is cost per session — we cache aggressively and route to small models where possible.
On-device ML is right when privacy is core (medical, fintech, anything regulated), when the feature must work offline (travel apps, field workers), or when latency below 100ms is required. Core ML on iOS and TFLite on Android handle this beautifully — we ship vision, audio, and small-LLM features on-device when the use case fits.
Mobile pricing and timelines
Mobile is consistently the most-underbudgeted category we quote on. Honest numbers below.
React Native MVPs: $35K-$80K, 8-14 weeks. Production-grade React Native apps: $60K-$150K, 12-22 weeks. Native iOS or Android (single platform): $50K-$120K. Native both platforms: $90K-$220K. Backend + sync layer is typically additional 30-50% on top. Maintenance retainers from $6K/month — we strongly recommend ongoing support given OS updates twice a year.
Tell us about your mobile concept and platforms
Two-minute form. We reply within 4 working hours.