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Free AI App Builder
Build Android apps and games for free - get a key from OpenRouter or Arena AI and pick a free model
AppMintAppwrightBoth builders - the steps below are the same in each.
1Build your app for free#
You can create a full Android app or game here without paying anyone - including us.
The AI that writes your app runs on your own free account with one of two gateways: OpenRouter or Arena AI. Both hand out an API key for free, and both carry models that cost nothing to use. You bring the key, we do the rest.
It takes about two minutes to set up, and you only ever do it once.
2Step 1 - Create your free key#
Pick either gateway. You only need ONE of them:
- OpenRouter - one key unlocks Claude, GPT, Gemini, Llama, DeepSeek and hundreds more. Its free models have ids ending in ":free", and Appwright lists those first so they are easy to spot.
- Arena AI - a newer gateway with the same one-key idea and a clean model list.
Sign up with an email or a Google account, then open the keys page and create a key. Copy it straight away - most sites show a key only once.
3Step 1b - Or use Arena AI instead#
Prefer Arena AI? Sign up at arena.ai, open the dashboard and create a virtual API key. Paste that key into Appwright exactly the same way as an OpenRouter key - everything after this step is identical.
4Step 2 - Tap 'Create with AI'#
Back on the Appwright home screen, tap 'Create with AI' to open the AI App Studio. This is where you describe your app and watch it get built.
5Step 3 - Add your key#
In the AI App Studio:
- Tap the provider name at the bottom of the screen (it shows the current provider).
- Choose OpenRouter or Arena AI from the list.
- Paste your key and tap 'Save & Test'.
A green tick means the key works. Your key is stored encrypted on your device and is sent only to the gateway you chose - never to us.
6Step 4 - Choose a free model#
Once the key is accepted, Appwright loads the full model list from your account.
On OpenRouter, look for models ending in ":free" - they are sorted to the top and cost nothing. On Arena AI, pick any model from the list.
A 📷 marker means the model can also read images, which is what powers Screenshot → App.
7Step 5 - Describe it, and build#
Type what you want in plain words - "a habit tracker with streaks and a dark theme", "a 2D endless runner game" - and tap Generate.
Preview it live, ask for changes in the same box, then tap 'Build App' to turn it into a real APK you can install or publish to Google Play.
No credits are used and nothing is charged: the whole run happens on your own free key.
8Good to know#
- Free models are shared by a lot of people, so they can be slower or briefly busy at peak times. Try again in a moment, or switch to another free model.
- Bigger apps ask more of the model - if a large app struggles on a free model, a paid model on the same key handles it comfortably.
- You can swap providers or keys whenever you like; your projects stay put.
- Prefer to skip setup entirely? Appwright needs no key or account at all - see the Appwright section below.