# Ramus

> Test your Android APK online: cloud Android emulators for app developers and coding agents, with a free plan. Run your build in a real emulator in the browser, share a live link, preview GitHub pull requests, develop over adb with hot reload, or give Claude Code, Cursor and Codex a device through the CLI or MCP.

Ramus is for developers, QA and coding agents testing Android apps they build or are authorized to test; it is not a consumer cloud phone. It builds and runs Expo, React Native, Flutter and Kotlin/Java Gradle apps on Android 17 (x86_64) emulators without the Play Store.

Start with the agent guide for commands and authentication. The HTTP API is not a stable public contract.

## Product pages

- [Pricing](https://ramus.dev/pricing): Free, Hobby, Pro and Enterprise plans, monthly device minutes, and the no-account CLI trial.
- [Changelog](https://ramus.dev/changelog): What changed in Ramus, newest first.
- [Acceptable Use Policy](https://ramus.dev/acceptable-use): What Ramus devices are for and what is not allowed.
- [Privacy Policy](https://ramus.dev/privacy): How we collect, use, protect, and retain information when you use Ramus.
- [Terms of Service](https://ramus.dev/terms): The terms that govern your access to Ramus and use of our services.
- [Subprocessor List](https://ramus.dev/subprocessors): The providers that help us deliver Ramus, what they process, and where they operate.
- [Data Processing Agreement](https://ramus.dev/dpa): Our responsibilities when we process personal data on your behalf.
- [Cloud Android Emulator for AI Agents](https://ramus.dev/products/agents): Let Codex, Claude Code, or another AI agent run your Android APK in a cloud emulator, inspect the UI, tap, type, capture screenshots, read logs, and verify changes.
- [Test your Android APK online, free for developers and QA](https://ramus.dev/products/test-apps-online): Upload your APK and run it in a real Android emulator in your browser, free to start. Tap through flows, read logs, and share a live link with QA and reviewers. No Android Studio needed.
- [Android preview environments for GitHub pull requests](https://ramus.dev/products/github-previews): Ramus builds supported Android pull requests and posts a preview link on GitHub. Try the app in your browser before merging, with no local emulator setup for reviewers.
- [iOS Emulators Coming Soon](https://ramus.dev/products/ios-emulators): iOS app testing in the browser is coming to Ramus. See what we're planning and join the waitlist for early-access updates.

## Documentation

- [How Ramus works](https://ramus.dev/docs): Run and review Android apps in a browser, from an APK or a GitHub pull request.
- [Quickstart](https://ramus.dev/docs/quickstart): Upload an APK and open your Android app in the browser.
- [Test an Android APK online](https://ramus.dev/docs/test-apk-online): Upload your APK, use it in a browser, and share access to the running Android emulator.
- [Agents and CLI](https://ramus.dev/docs/agents): Start an Android emulator, verify a flow, and share the result from your terminal or coding agent.
- [Local development](https://ramus.dev/docs/development): Connect your local Android toolchain to a Ramus emulator with adb, Fast Refresh, or hot reload.
- [Builds](https://ramus.dev/docs/builds): Supported Android projects, build configuration, logs, and APKs.
- [Preview sessions](https://ramus.dev/docs/previews): Control, share, restart, and end an Android session.
- [Camera and microphone](https://ramus.dev/docs/camera-and-microphone): Use your own camera and microphone, or an image or audio file, as the Android device’s camera and mic.
- [Plans and minutes](https://ramus.dev/docs/plans): What each plan includes, how minutes are counted, and what happens when you run out.
- [Security](https://ramus.dev/docs/security): Session access, isolation, credentials, and data retention in Ramus.

## Blog

- [Android Fragmentation Statistics 2026](https://ramus.dev/blog/android-fragmentation-statistics-2026): How many Android versions, devices and manufacturers an app has to work on in 2026, with every number traced to its primary source.

## Agents

- [Agent reference](https://ramus.dev/agents.md): commands, authentication, limits, and the observe–act–verify loop.
- [Ramus skill](https://ramus.dev/skill.md): installable workflow for Android verification.
- [Full documentation](https://ramus.dev/llms-full.txt): all product guides and the agent reference in one text file.