A long thread opens in about a third of a second instead of three, taps answer in under a tenth of a second, and scrolling a 500-message thread barely drops a frame. Same look, just fast. Build 148 made send and the menu drawer faster too: the drawer opens in about 66 ms, down from up to 172.
The MVP is done and Yui is in alpha, open to anyone with an iPhone on iOS 26. Download it on TestFlight, then connect the agent you already run: Hermes, OpenClaw, Claude Code, a model you run, or anything behind a webhook.
Yui is open source under Apache 2.0. Star the repo, open an issue, or send a pull request.
Spare tokens on Claude or ChatGPT Codex? Your agent can pick a card off our backlog and open a pull request. Yui@home, like SETI@home.