Mobile App Development
Mobile apps people
actually want to open.
We design and build native and cross-platform mobile apps that launch fast, feel buttery on every device, and pass App Store and Play Store review the first time. From a React Native MVP to a fully native Swift or Kotlin product, we take your idea from wireframe to a five-star listing.
Why Hyflint
Why choose Hyflint.
Native-grade performance
Whether we ship in Swift, Kotlin, React Native or Flutter, we tune for 60fps scrolling, instant cold starts and battery-friendly background work — not laggy webview wrappers.
One codebase, both stores
With React Native and Flutter we ship iOS and Android from a single codebase, cutting your build cost and timeline roughly in half without sacrificing the native feel.
MVP to App Store in weeks
Our JobSite app went from idea to a live, store-ready build in six weeks. We scope tightly, build in sprints and get a real app into real hands quickly.
Store submission handled
We own the Apple App Store and Google Play submission — provisioning, signing, privacy nutrition labels, screenshots and review responses — so your launch isn't blocked by a rejection.
OTA updates & maintenance
Push fixes and features over the air with Expo and CodePush, monitor crashes with Sentry, and keep your app current with each new iOS and Android release.
Built for US, UK & AU
We ship apps for clients across the United States, United Kingdom and Australia — handling timezone-friendly delivery, regional store accounts and compliance for each market.
What we do
Our mobile app services.
Native iOS app development
High-performance iPhone and iPad apps built in Swift and SwiftUI, integrated with Apple frameworks like HealthKit, ARKit, Apple Pay and push notifications.
Native Android app development
Modern Android apps in Kotlin and Jetpack Compose, optimized across the Pixel-to-budget device range with Material 3, Play Billing and background services.
React Native cross-platform apps
One TypeScript codebase shipping to both stores. Ideal for startups and MVPs that need iOS and Android live fast with shared logic and native modules where it counts.
Flutter app development
Pixel-perfect, natively compiled apps with Flutter and Dart — a single design system rendered identically on iOS, Android, web and desktop.
Progressive web apps (PWA)
Installable, offline-capable web apps with push notifications and home-screen presence — a low-friction alternative when an app store listing isn't required.
App UI/UX & prototyping
Mobile-first product design in Figma — user flows, interactive prototypes, motion and accessibility — validated before a single line of production code is written.
API & backend integration
Secure, scalable backends with Node.js, Supabase and Firebase: authentication, real-time sync, offline-first storage and push delivery wired straight into your app.
App Store deployment & maintenance
End-to-end App Store and Play Store release, plus ongoing crash monitoring, performance tuning, OS-update support and feature iteration after launch.
Tech stack
Modern technologies we build with.
Cross-platform
- React Native
- Flutter
- Expo
- TypeScript
Native
- Swift / SwiftUI
- Kotlin
- Jetpack Compose
- Objective-C
Backend & data
- Node.js
- Supabase
- Firebase
- PostgreSQL
Ship & monitor
- App Store Connect
- Google Play Console
- Fastlane
- Sentry
How we work
Our development process.
01
Discovery & scoping
We map your users, core flows and platform targets, then decide native vs cross-platform and lock a tight MVP scope with a fixed timeline.
02
UX & prototype
Wireframes become an interactive Figma prototype you can tap through on your phone — so we validate the experience before engineering begins.
03
Architecture & setup
We stand up the codebase, navigation, state management, backend and CI/CD, plus TestFlight and Play internal testing tracks for early builds.
04
Sprint development
We build in two-week sprints with demo builds you install each cycle — screens, native modules, offline sync and push notifications come together feature by feature.
05
QA & device testing
Real-device testing across iOS and Android versions, performance profiling, crash hardening and accessibility checks before we touch the stores.
06
Launch & iterate
We handle App Store and Play submission, monitor crashes and reviews post-launch, and ship OTA updates and new features on a roadmap.
Who we serve
Industries we work with.
Fintech
Secure mobile banking, payments and wallet apps with biometric auth, encrypted storage and PCI-conscious flows — like the JobSite contractor payments MVP.
Healthcare
HIPAA-aware telehealth and patient apps with video visits, appointment booking, HealthKit integration and secure messaging.
On-demand & delivery
Real-time delivery and booking apps with live GPS tracking, in-app payments and push-driven order updates for customers and drivers.
Fitness & wellness
Workout, habit and wellness apps with wearable sync, offline tracking, streaks and notification nudges that keep users coming back daily.
Retail & commerce
Branded shopping apps with product catalogs, Apple Pay and Google Pay checkout, loyalty and personalized push campaigns.
Logistics
Field and fleet apps with offline-first data capture, barcode scanning, route optimization and back-office sync for teams on the move.
Our work
Selected portfolio.
Fintech · React Native MVP
JobSite
A contractor payments and job-management MVP with a React Native mobile app, shipped store-ready in six weeks to 2,000+ users.
View case studyHealthcare · Mobile portal
NurseNest
A mobile-first healthcare platform connecting 50,000+ patients with clinics, cutting no-shows 45% through reminders and booking.
View case studyTelehealth · Product launch
PulseWell
A telehealth SaaS launch with a mobile-optimized experience that lifted conversion 4.4x and time on page by 180%.
View case studyCase study
Results that speak for themselves.
Case study · JobSite
A fintech mobile MVP, store-ready in six weeks
JobSite needed a contractor payments and job-tracking app in the hands of real users — fast. We built the MVP around a React Native mobile app sharing a TypeScript codebase across iOS and Android, wired to a Node.js and Supabase backend with real-time sync and push notifications. From kickoff to a live, store-ready build took six weeks, and the app reached over 2,000 users in its first month while holding near-perfect uptime.
Read the full case study2,000+
Users in first month
6 weeks
Time to market
97
Lighthouse score
99.98%
Uptime
FAQ
Frequently asked questions.
How much does it cost to build a mobile app?
Most apps we build land between $15k and $80k depending on scope. A focused cross-platform MVP with core flows, auth and a backend typically runs $15k–$30k, while feature-rich native apps with integrations sit higher. We scope tightly and give a fixed quote before we start so there are no surprises.
Should I choose native or cross-platform (React Native / Flutter)?
Cross-platform with React Native or Flutter is ideal for most products — you ship to both iOS and Android from one codebase at roughly half the cost and time. We recommend native Swift or Kotlin only when you need deep platform features, heavy graphics or maximum performance. We'll advise honestly based on your goals.
How long does it take to develop a mobile app?
A cross-platform MVP usually takes 6–10 weeks to a store-ready build — our JobSite app shipped in six. Larger native apps with multiple integrations run 3–5 months. We work in two-week sprints with installable demo builds each cycle so you see progress throughout.
Do you handle App Store and Google Play submission?
Yes — submission is fully included. We manage provisioning and signing, App Store Connect and Play Console setup, privacy labels, screenshots, metadata and the review process, and we respond to any reviewer feedback so your app gets approved without delays.
What about maintenance after launch?
Apps need ongoing care. We offer maintenance plans covering crash monitoring with Sentry, performance tuning, OS-update compatibility for each new iOS and Android release, and over-the-air updates via Expo so you can ship fixes without a full store resubmission.
Can you build for both iOS and Android at the same time?
Absolutely. With React Native or Flutter we develop iOS and Android in parallel from a shared codebase, so both apps launch together and stay in feature parity. You get full coverage of the mobile market without paying for two separate builds.
Contact
Let's build something worth shipping.
Tell us about your project and we'll get back to you with an honest assessment within 4 hours.