> ## Documentation Index
> Fetch the complete documentation index at: https://docs.billions.network/llms.txt
> Use this file to discover all available pages before exploring further.

# Mobile Wallet

> A privacy-first identity wallet for iOS and Android — manage credentials, generate zero-knowledge proofs, and verify your identity on the go.

## Overview

The Mobile Wallet puts the same identity in your pocket. The iOS and Android apps handle credential management, issuer and verifier authentication, and on-device zero-knowledge proof generation, so you can verify who you are wherever you go — no browser, no intermediaries.

<Info>
  On mobile, ZK circuit files are downloaded to the device and proof generation happens fully on-device. No personal data leaves the user's hardware during the proof generation process.
</Info>

## Download

<CardGroup cols={2}>
  <Card title="iOS" icon="apple" href="https://apps.apple.com/in/app/billions/id6742451067">
    Download on the App Store
  </Card>

  <Card title="Android" icon="android" href="https://play.google.com/store/apps/details?id=com.billions.app.mobile">
    Get it on Google Play
  </Card>
</CardGroup>

***

<Info>
  **Credential Sync** — credentials sync automatically via end-to-end encrypted cloud storage. Sign in with the same account — Google, Apple ID, or crypto wallet — on the web or mobile wallet, and any credentials already claimed on one platform are immediately available on the other, with no need to re-claim them.
</Info>