Native Android · Kotlin · Jetpack Compose

Android apps that feel right on every device

We design and build native Android apps in Kotlin and Jetpack Compose — fast, secure and polished on phones, tablets, foldables and Wear OS, from the first sketch to Google Play.

Native Android development for apps that need to run smoothly on every brand and screen.

TECHTARN is an Android app development company working with startups and established businesses in the USA, UK, UAE, India, Canada, Australia and Singapore. Our Android developers build in Kotlin and Jetpack Compose, following Material Design, so apps look sharp and run smoothly across Samsung, Pixel and every major brand.

We handle the whole journey — discovery, UI/UX design, development, device testing, Google Play launch and support — and build the backend through our API and cloud teams. Need iPhone too? We build it natively in Swift or cross-platform with Flutter or React Native.

FEATURE TOUR

Scroll through what we build

Eight capabilities that make Android apps feel native. The phone shows each one as you scroll.

01

Jetpack Compose interfaces

Modern, native screens built with Jetpack Compose and Material Design 3 — with dynamic colour, dark theme and TalkBack support built in.

  • Jetpack Compose
  • Material Design 3
  • Accessibility from day one
02

Widgets & notifications

Home screen widgets and rich, ongoing notifications that show progress without opening the app.

  • Jetpack Glance widgets
  • Ongoing and progress notifications
  • Quick Settings tiles
03

Google Pay & in-app billing

Fast checkout with Google Pay, and subscriptions or one-time purchases with Google Play Billing.

  • Google Pay
  • Play Billing subscriptions
  • Purchase verification
04

Health Connect & Wear OS

Read and write health and fitness data with the user's permission, with companion apps for Wear OS watches.

  • Health Connect
  • Wear OS apps and tiles
  • Privacy-first data handling
05

Push notifications

Timely, relevant notifications through Firebase Cloud Messaging — segmented, scheduled and measured.

  • Firebase Cloud Messaging
  • Notification channels and actions
  • Deep links into the app
06

Offline & background sync

Apps that keep working without signal and sync reliably in the background when the connection returns.

  • Room database
  • WorkManager background jobs
  • Conflict handling
07

Maps & location

Store finders, delivery tracking and location-aware features with the Google Maps SDK and fused location.

  • Google Maps SDK
  • Geofencing
  • Battery-friendly location
08

On-device AI & camera

Image recognition, text scanning and smart camera features running on the device, for speed and privacy.

  • ML Kit
  • CameraX
  • On-device processing
THE ANDROID TOOLKIT

Libraries we work with

A periodic table of the Android and Google technologies behind our apps.

KtKotlinLanguage
JcComposeInterface
M3Material 3Design
CoCoroutinesConcurrency
FlFlowReactive
RmRoomStorage
DsDataStoreSettings
WmWorkManagerBackground
HiHiltInjection
NvNavigationScreens
RfRetrofitNetworking
PbPlay BillingPayments
HcHealth ConnectHealth
MpMaps SDKMaps
MkML KitAI
FbFirebasePush
GlGlanceWidgets
GrGradleBuild
FROM ANDROID STUDIO TO GOOGLE PLAY

A calm, predictable release process

Every release follows the same five stations, so launches are never a surprise.

  1. 🛠️BuildCode review, automated tests and signed app bundles.
  2. 🧪Testing tracksInternal and closed testing with your team and real users.
  3. 📋Play reviewStore listing, data safety form and policy checks before submission.
  4. 🚀Staged rolloutRelease to a small share of users first, then everyone.
  5. 📈MonitorAndroid vitals, crash reports and analytics after launch.
DECISION HELPER

Native, Flutter or React Native?

Tick what matters for your app. The bars show which approach usually fits best — a starting point for our conversation, not a verdict.

Native Kotlin0

Choose native when Android users are your priority and you need the best performance and full access to Android features.

You are here
Flutter0

Choose Flutter for one codebase on Android and iOS with a highly custom, consistent design.

Learn about Flutter →
React Native0

Choose React Native to share code across Android and iOS, especially if your team already uses React.

Learn about React Native →
ONE CODEBASE, MANY SCREENS

Across the Android ecosystem

Compose and adaptive layouts let us share much of your app across Android devices.

📱PhonesYour core app, tested across screen sizes and brands.
📖Tablets & foldablesAdaptive layouts for large and folding screens.
⌚Wear OSGlanceable watch apps, tiles and complications.
📺Android TVBig-screen apps for streaming and media.
🚗Android AutoSafe, simple in-car media and navigation.
💻ChromebooksApps that work with keyboards and large windows.
WHAT WE BUILD

Android apps for every kind of business

📱

Consumer apps

Polished apps for retail, food, travel and lifestyle brands.

🏥

Health & fitness

Health Connect, Wear OS and privacy-first health apps.

💳

Fintech & banking

Secure apps with biometrics, encrypted storage and Google Pay.

🛒

E-commerce

Fast shopping apps with Google Pay and push campaigns.

🎓

Education

Learning apps with offline content and progress tracking.

🏢

Enterprise & field apps

Rugged-device, kiosk and managed-device apps for teams.

How we work

1Discover

Goals, users, features and a realistic plan and estimate.

2Design

Wireframes and UI that follow Material Design guidelines.

3Build

Two-week sprints with a working test build at the end of each.

4Test

Unit, UI and real-device testing across brands and screen sizes.

5Launch

Google Play listing, policy checks and staged rollout.

6Grow

Updates for new Android versions, new features and support.

Every Android project includes

  • Kotlin and Jetpack Compose codebase
  • Clean architecture (MVVM)
  • Unit and UI tests
  • Accessibility (TalkBack, font scaling)
  • Crash reporting and analytics
  • Internal testing builds
  • Google Play submission
  • Source code and documentation handover
  • Post-launch support options
FAQ

Android development FAQs

Answers to the questions we hear most.

Q1Should I build native Android or cross-platform?
Native Kotlin gives the best performance and full access to Android features. Cross-platform (Flutter or React Native) shares one codebase with iOS. Try the decision helper above.
Q2What is Jetpack Compose?
Google's modern toolkit for building Android interfaces in Kotlin. It is faster to develop with and is the recommended way to build new Android UI.
Q3How long does it take to build an Android app?
A focused first version often takes three to five months, depending on features, design and integrations. We agree a plan and milestones in the discovery phase.
Q4How much does an Android app cost?
It depends on scope, design and backend needs. After a short discovery call we send a clear estimate. You can also try our free project estimator.
Q5How do you handle so many Android devices?
We design adaptive layouts and test on a range of real devices and emulators covering popular brands, screen sizes and Android versions.
Q6Do you handle Google Play publishing?
Yes — store listing, data safety form, content rating, policy checks, testing tracks and staged rollout.
Q7Who owns the source code?
You do. We hand over the full source code, documentation and access to all accounts.
Q8Can you modernise an existing Android app?
Yes. We start with a code review, then fix urgent issues and plan improvements, such as moving from Java to Kotlin or from XML layouts to Compose. See our Java page.
Q9Do you support apps after launch?
Yes. We update apps for new Android versions and Play policy changes, fix issues and add features. See software maintenance.
Q10Can you build the iOS version too?
Yes — natively in Swift, or with Flutter or React Native. See our iOS development page.
Get In Touch

Ready to build your Android app?

Tell us about your app idea, users and timeline. We'll send a free scope, tech recommendation and estimate — we reply within 4 business hours.

⏰
Response TimeWithin 4 business hours (your timezone)
Send Us a Message