Mika: open-source Android agent that works your apps in the background

Mika is a new open-source Android app (Android 11 and up, Apache-2.0 licence) that takes a one-sentence request and operates your phone's apps and the web on a hidden background screen while you keep using the phone. Its demos include summarising a group chat, finding a flight and adding a product to a cart while stopping before checkout. You connect your own model API key or sign in with a ChatGPT, xAI or OpenRouter account, the README says there is no Mika server, and controlling phone apps needs a one-time wireless debugging pairing. It says it hands logins, verification codes and payments back to you. The repository was created on 29 October and has around 3,800 GitHub stars; it has not been independently tested.