Private by design.

Yemma 4 runs entirely on your iPhone. There is no cloud relay, no account system, and no server that receives your conversations. Your data stays on your device because there is nowhere else for it to go.

Short version

The app processes prompts, images, and model output on-device. The one-time model download comes from Hugging Face and contains only model files — no chat content is ever sent anywhere.

What we collect

Chat history: if you keep conversation history enabled, chats are stored locally on your device. You can delete them in the app.
App settings: preferences such as model and interface settings may be saved locally on your device.
Diagnostics: the app may keep local diagnostics or debug state on device to help with troubleshooting. We do not upload that data to a third-party AI service.

What we do not do

We do not transmit chat content, images, or attachments to a third-party AI service.
We do not sell personal data.
We do not use advertising trackers or cross-app analytics for chat data.
We do not require an account to use the app.

Your choices

You can delete your conversation history from inside the app.
You can delete the downloaded model from inside the app if you want to reclaim storage.
If you contact support, only the information you choose to send in that message is shared with us.

Contact

Questions about privacy can be sent to justin@avmillabs.com. For general support, see the support page.