
iOS 26.4 broke Prelude’s on-device AI sessions. I just shipped the fix in v1.0.2
If you downloaded Prelude recently and noticed your therapy prep sessions getting cut off early, that was a real bug and not your device. The iOS 26.4 update changed how the foundation models behave on-device and it was tearing down sessions before they could complete. Basically unusable.
I shipped v1.0.2 this week with the fix. Sessions run to completion now and the brief generation works properly again.
For context, Prelude runs fully on-device with no backend, no cloud, no third-party APIs. Everything stays local. That’s the whole point of the app. So when the foundation model behavior shifted in 26.4, there was no server-side patch I could push. Had to ship a proper update.
If you tried it and gave up, worth giving it another shot. And if you’re on auto-updates you probably already have it. The next update coming in a few days will have barge-in support.
App Store: https://apps.apple.com/us/app/prelude-therapy-prep/id6761587576