You built an app with AI. Now look at it.

Your agent just said "your app is ready" and handed you a file ending in .apk — and you have no way to open it. That moment is exactly what PreviewAPK exists for: the build runs on a real Android device in the cloud, and you watch it — or tap through it yourself — right in your browser.

The moment after "your app is ready"

Building apps with AI collapsed the writing part. It did nothing for the looking part. The traditional ways to see an Android app all assume a developer's desk: Android Studio (a heavy install with its own learning curve), an emulator (a second setup project), the Play Store (accounts, review, days), or a spare Android phone (hardware you may not own). If you direct an agent instead of writing code, none of those were built for you. A link was.

How it works, for non-developers

1. Your agent pushes the build. You hand it your API key and point it at the agent guide — written for the agent to read, not for you to study. From then on, every build it finishes can land on your PreviewAPK device automatically.
2. You open your link. One share link per session. It opens the live build while the session runs — and a new run means a new link, so nobody ever lands on the wrong build.
3. You look. The app runs live in your browser. If the agent tested it first — it can, with screenshots — you'll hear "built it, tested it, take a look," and the link it pastes is the same one you already have.
4. You can take the wheel. Links only watch, but your portal is yours: open it and you can tap through the real app yourself, no agent in the middle.

Sharing what you built

The same link works for everyone you want to show: a co-founder, a spouse, a first customer, an investor on a call. They open it in any browser, install nothing, create no account, and watch the app run while you (or your agent) drive. When someone needs it on their own phone — a real customer test — turn on the device's QR code and they scan to install the exact build.

One app, one device, no surprises

Each app gets its own device slot at $19/month, unlimited use. A slot runs one app at a time on a clean phone, so previews are fast and nothing from another project leaks into your demo. Build a second app and it gets its own slot and its own link. Sessions stop on their own after 15 idle minutes; your link wakes the device whenever you come back.

Keep going

• AI agent Android testing — the technical side: how agents drive, verify, and hand over.
• Preview a Claude Code Android app — the concrete workflow, including what to paste into your agent.
• Preview an Android app — the general product tour.

FAQ

I don't write code. Is this really for me?

Yes — this page exists because of you. If an AI agent (Claude, ChatGPT, Cursor, Replit) built your Android app, PreviewAPK is how you see it: the agent pushes the build, you open a link, and the app is running in your browser. No Android Studio, no emulator, no developer account anywhere.

How does my agent connect to PreviewAPK?

You give it two things from your portal: your API key, and a one-page guide (previewapk.siteport.site/agents) written for agents to read. Agents that can run commands use the CLI; agents that support MCP get native tools. Setup takes your agent a few minutes, once.

Can I try the app myself, not just watch?

Yes. Watching is the link's job, but in your own portal you can take control and tap around the real app yourself — the agent can even hand you a session it already started and tested, so you pick up right where it left off.

Can I put the app on my own phone?

Yes. Enable the QR code on your device and scan it with your phone's camera: the same build installs on your real Android phone. (iPhones can't install Android apps — for iPhone users you'd share the browser link instead.)