I shipped an offline SD app for Android. It's slow, your phone will get warm, and it's completely free.

Built an Android app that runs Stable Diffusion entirely on the phone. No servers, no account, no subscription, no ads, no internet needed after the model downloads. Prompts never leave the device. What you get Fully offline after first download - works on a plane, in the mountains, anywhere No account, no API key No credits, no limits Free. No ads, no IAP, no subscription What you're giving up Speed. 1-5 min per image depending on your device. That's a UNet on a phone, not an A100 - not fixable by software Battery. Each generation costs real watts.