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Mobile Engineering

Mobile apps people keep on their home screen.

Cross-platform apps in Flutter and React Native, and native when it matters. Smooth, stable and released to the stores without drama.

  • iOS
  • Android
  • Flutter
  • React Native
  • Swift
  • Kotlin
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iOS, Android, Flutter, React Native, Swift, Kotlin

What we deliver

What We Build for Mobile. 

Consumer apps, business apps and everything in between.

  • Cross-platform apps

    One codebase for iOS and Android in Flutter or React Native, without the clunky feel.

  • Native iOS and Android

    Swift and Kotlin when you need deep device features or the last drop of performance.

  • Offline-first apps

    Apps that keep working in lifts, basements and warehouses, then sync.

  • Push and engagement

    Notifications, deep links and in-app messages that bring people back.

  • App rescue

    Crashing, slow or abandoned apps stabilised and brought up to date.

  • Store releases

    App Store and Play Store submissions, reviews and staged roll-outs handled for you.

Our approach

From Sketch to App Store. 

Designed for thumbs, tested on real devices, released in stages.

  1. 01

    Choose the right approach

    Cross-platform, native or both, decided on your features, budget and team.

  2. 02

    Design for thumbs

    Prototypes tested on real phones before we build, not just in a browser.

  3. 03

    Build in fortnightly drops

    A new test build on your phone every two weeks via TestFlight and Play testing.

  4. 04

    Test on real devices

    Automated tests plus a device lab covering the phones your users actually own.

  5. 05

    Release in stages

    Staged roll-outs and feature flags, so any issue reaches few users.

  6. 06

    Watch the crash rate

    Crash and performance monitoring from day one, fixed before reviews suffer.

Quality targets

Quality We Commit To. 

Targets we set per app and track in your crash and performance dashboards.

  • Target99.9%

    Crash-free sessions

    target for every production release

  • Target<2s

    Cold start

    on mid-range devices

  • Target60fps

    Smooth scrolling

    on lists and animations

  • Target4.5★+

    Store rating goal

    backed by in-app feedback loops

Targets we agree at kick-off and report on every week. Your numbers go in the contract, not on a poster.

Tech stack

Tools We Know Well. 

We choose boring, proven tools by default and reach for new ones when they earn it.

Cross-platform

  • Flutter
  • React Native
  • Expo
  • Dart
  • TypeScript

Native

  • Swift
  • SwiftUI
  • Kotlin
  • Jetpack Compose

Backend

  • Firebase
  • Supabase
  • Node.js
  • GraphQL

Release

  • Fastlane
  • EAS
  • Codemagic
  • TestFlight

Monitoring

  • Crashlytics
  • Sentry
  • Firebase Performance

Testing

  • Detox
  • Appium
  • Maestro
  • BrowserStack

Related work

Work We're Proud Of. 

Projects where this discipline did the heavy lifting.

All case studies

Industries

Built for Regulated, Busy Industries. 

The same engineering discipline, tuned to the rules and rhythms of your sector.

Ways to work with us

Three Ways to Work With Us. 

Pick the model that fits your team today. You can switch as the project grows.

Questions We Hear Often. 

  • Flutter or React Native?

    Both are excellent. Flutter suits highly custom UI; React Native suits teams already using React. We'll recommend one on your specifics.

  • Do you handle the App Store and Play Store?

    Yes. Accounts, listings, submissions, review questions and staged roll-outs are all part of the job.

  • Can you take over our existing app?

    Yes. We audit stability first, fix the crashes, then carry on with your roadmap.

  • How do you test on different phones?

    Automated tests plus a device lab and cloud devices covering the models and OS versions your users have.

  • How long does an app take?

    A focused first version usually takes 8 to 14 weeks. We'll give you a milestone plan in the proposal.

  • What about updates after launch?

    We keep your app current with OS releases, monitor crashes and ship improvements on a monthly plan.

Get in touch

Talk to our Mobile Engineering team.

Share a few lines about your idea, workflow or project. A senior lead replies within one business day.

  • Free 30-minute strategy call
  • NDA on request
  • Proposal within 48 hours
hello@vaug.in Our offices

We reply within one business day. No spam, ever.

Other disciplines

Explore Other Disciplines. 

Your app, in your hand,
in weeks.

Free 30-minute strategy call · NDA on request · Proposal within 48 hours

Book a call