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What is android?

bitwarden/android — explained in plain English

Analysis updated 2026-06-24

8,819KotlinAudience · developerComplexity · 4/5Setup · hard

In one sentence

This is the open-source Android source code for Bitwarden's password manager and two-factor authentication apps, built in Kotlin with Jetpack Compose for developers who want to build, inspect, or contribute.

Mindmap

mindmap
  root((bitwarden-android))
    What it does
      Password manager app
      Two-factor auth app
      Open source
    Tech Stack
      Kotlin Compose
      Hilt Retrofit
      Bitwarden SDK
    Setup Requirements
      Java 21
      GitHub token
      Pre-commit hook
    Audience
      Android developers
      Security researchers
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Code map

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filefunction / class

What do people build with it?

USE CASE 1

Build Bitwarden from source to inspect how it handles encryption and vault operations on Android.

USE CASE 2

Contribute a bug fix or feature to the official Bitwarden Android app by following the developer setup guide.

USE CASE 3

Study how a production Android app wires together Jetpack Compose, Hilt dependency injection, and Retrofit networking.

USE CASE 4

Audit the cryptographic code to verify how Bitwarden protects credentials on-device using the Bitwarden SDK.

What is it built with?

KotlinJetpack ComposeRetrofitOkHttpHilt

How does it compare?

bitwarden/androidsquare/okiodeniscerri/ytdlnis
Stars8,8199,0048,580
LanguageKotlinKotlinKotlin
Setup difficultyhardeasyeasy
Complexity4/52/51/5
Audiencedeveloperdevelopergeneral

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1h+

Requires Java 21, a GitHub personal access token for private package access, and configuring code style rules before the project will build.

So what is it?

This is the source code for Bitwarden's Android apps, which include the password manager and the two-factor authentication app. Bitwarden is a well-known open-source password management service that stores and fills in your login credentials. This repository contains the Android versions of those apps, built in Kotlin and targeting Android 10 and newer. The README is primarily a developer setup guide rather than a product description. It explains how to clone the code, configure build tools, set up a GitHub personal access token for accessing private packages, and apply the project's code style rules. Developers are also walked through setting up Java version 21 and optionally installing a pre-commit hook that checks code quality before each commit. The project uses Jetpack Compose for its user interface, which is a modern approach to building Android screens. It also relies on a long list of standard Android libraries for things like biometric authentication, autofill, camera access for barcode scanning, encrypted storage, background task scheduling, and navigation between screens. Beyond those standard Android components, the app uses Retrofit and OkHttp for network requests, Hilt for wiring together different parts of the app, and the Bitwarden SDK for core cryptographic and vault operations. The list of dependencies in the README is thorough and each one is documented with its purpose and license. This is the official repository maintained by the Bitwarden company. It is an open-source project, and the setup instructions are written for contributors who want to build and modify the app themselves.

Copy-paste prompts

Prompt 1
How do I build the Bitwarden Android app from source on macOS? Walk me through the developer setup steps including Java 21 and the GitHub token.
Prompt 2
I want to contribute to Bitwarden Android. How do I set up the pre-commit hook that checks code quality before each commit?
Prompt 3
Show me how the Bitwarden Android app uses Hilt for dependency injection in a Jetpack Compose screen, which files should I look at?
Prompt 4
How does Bitwarden Android handle biometric authentication? Which part of the codebase covers that feature?
Prompt 5
I need a GitHub personal access token to build Bitwarden Android. How do I generate one and configure Gradle to use it?

Frequently asked questions

What is android?

This is the open-source Android source code for Bitwarden's password manager and two-factor authentication apps, built in Kotlin with Jetpack Compose for developers who want to build, inspect, or contribute.

What language is android written in?

Mainly Kotlin. The stack also includes Kotlin, Jetpack Compose, Retrofit.

How hard is android to set up?

Setup difficulty is rated hard, with roughly 1h+ to a first successful run.

Who is android for?

Mainly developer.

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