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Android developmentAndroid App Development

Build your mobile app for iOS and Android, or for Android only. App369 builds native Android applications with Kotlin and Jetpack Compose that reach the world's largest mobile audience with high-performance, Material Design 3 experiences.

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A single Android-style smartphone standing on a dark grid floor, showing app cards and a light blue button
Fiverr
5.0 · 127 reviews
Own product
Workspace369
Fixed-price offers from
$450

Prefer a fixed price?

Fixed scope, fixed price, paid upfront. The work happens in writing; no call needed.

What Simon builds

Android Development Services

01

Native Kotlin Development

High-performance Android applications built with Kotlin, Google's preferred language for Android since 2019.

02

Jetpack Compose UI

Modern declarative UI development with Jetpack Compose and Material Design 3.

03

Google Play Optimization

App369's ASO strategies maximize your app's visibility through keyword optimization, compelling graphics, A/B tested listings, and staged rollout strategies for risk-free launches.

04

Wear OS Apps

Smartwatch applications for Wear OS that leverage health sensors, tiles, complications, and notifications. Simon builds standalone and companion Wear OS apps with Jetpack Compose for Wear OS for fitness tracking, notifications, and quick interactions.

05

Android TV Apps

Applications optimized for the Android TV and Google TV platform using the Leanback library. Simon builds media streaming apps, content browsers, and interactive experiences designed for the 10-foot UI with remote control navigation.

06

Material Design 3 Implementation

Google's latest design system with dynamic color theming, updated components, and accessibility-first patterns. Simon implements Material You's personalization features that adapt your app's color scheme to the user's wallpaper and preferences.

How it works

The process

  1. Discovery & Planning

    Simon analyzes your business requirements, target audience, and Android-specific opportunities including Wear OS, Android TV, and Google services integration to create a comprehensive Kotlin development plan.

  2. UI/UX Design

    Simon designs interfaces following Google's Material Design 3 guidelines in Figma, with adaptive layouts that work across phones, tablets, foldables, and Chromebooks.

  3. Kotlin Development

    Simon builds your app using Kotlin, Jetpack Compose, and Android Architecture Components with MVVM pattern. Simon integrates Room, Retrofit, and Hilt for a scalable architecture.

  4. Testing & QA

    Testing with JUnit for unit tests, Espresso for UI tests, Firebase Test Lab across device models, and manual QA on real devices.

  5. Google Play Deployment

    Simon prepares Play Store assets, configures content ratings, manages internal and closed testing tracks, and handles staged rollouts to ensure a smooth launch with crash monitoring.

  6. Maintenance & Updates

    Ongoing support including Android OS compatibility updates, security patches, Google Play policy compliance, performance monitoring via Firebase Crashlytics, and feature enhancements.

Technologies

  • Kotlin
  • Jetpack Compose
  • Android Studio
  • Room
  • Retrofit
  • Hilt

Error fixes

Google Play problems Simon fixes

Each page explains the problem from Google Play’s own help pages, with what to change next.

Questions

Frequently asked questions

How much does it cost to develop an Android app?

Cost depends on scope, platforms and integrations. App369's rates are published on the fee structure page, and the free app cost calculator gives a range for an Android app with every assumption listed. Simon sends a fixed quote after reviewing your brief.

Should I use Kotlin or Java for Android development?

App369 builds all new Android projects in Kotlin.

How long does it take to build an Android app?

Simple apps take 2-3 months, medium-complexity apps with Room database, Retrofit networking, and Material Design 3 require 3-6 months, and complex enterprise applications with offline-first architecture can take 6-12 months.

What is the Google Play submission process?

Review typically takes 1-7 days for new apps. App369 handles the entire process including Play Store listing optimization and staged rollouts.

How do you handle Android device fragmentation?

App369 handles fragmentation with responsive layouts in Jetpack Compose, testing on a spread of real and Firebase Test Lab devices, a minimum API level chosen from your audience's devices, and Jetpack libraries that provide backward compatibility.

What are the best monetization strategies for Android apps?

App369 integrates Google Play Billing for subscriptions and one-time purchases, RevenueCat for cross-platform subscription management, and AdMob for advertising monetization.

Data and research

Start here

Reach Android Users Worldwide

Android dominates global mobile market share. The Android app development cost guide shows what drives the hours. Whether you need a native Kotlin app or a cross-platform Flutter solution that also targets iOS, get a detailed estimate by email, usually within one business day, or book a consultation ($100 per 15 minutes, paid upfront).

Get in touch View pricing

Fiverr reviews / 95 on app work

What buyers said about this kind of work

Read 126 of the 127 reviews
  • “This seller is top-notch. I am very satisfied. 10-star quality!!! We had a very nice Zoom chat. He answered ALL of my questions. Great experience!”
    A buyer in the United States, October 2021. Custom order on Fiverr
  • “Fantastic service and quality matches the price. I decided to a higher rate for development and Szymon exceeded my expectations. Thanks”
    Mark, United States, September 2021. App development on Fiverr
  • “Szymon was able to answer all the questions I had about this project. It was great to walk through all the details with him.”
    Rebecca, United States, August 2021. Custom order on Fiverr

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