It does not invent.
Aethyr uses what you actually told it. If it does not know, it says so.
Private intelligence · On your device
Foundation AI,
without the cloud.
Aethyr’s conversation runs on Apple’s intelligence built into your iPhone. Your words stay with you.
What it is
Apple’s on-device model.
Nothing bolted on.
Aethyr uses Apple’s Foundation Models framework—the on-device model family behind Apple Intelligence.
There is no third-party AI service, no Aethyr cloud and no remote conversation account. The model lives on the phone, and so does everything you say to it.
Where it is used
Only where intelligence
genuinely helps.
Talk to AethyrChat and voice that can hold the noise and file things into the right place.
Ask AethyrPage-aware prompts grounded in what you saved.
Task breakdownSmall, ordered actions from an overwhelming job.
Gentle reflectionsAn honest observation only when a real pattern is there—never a diagnosis.
Safe Search cardsProtected instruction cards rather than an open-web rabbit hole.
Where it is not used
Everything else is ordinary on-device code.
Saving a note. Setting a reminder. Running a timer. Storing medication or a memory. None of that touches the model. Intelligence appears only for conversation and only on demand.
NotesRemindersTimersMedicationMemoriesSettings
The rules it follows
Grounded.
Private.
Never harmful.
It never leaves the device.
Your words in and Aethyr’s words out stay on your iPhone.
It never judges or diagnoses.
No scores, streaks, shame or medical advice.
Without Apple Intelligence, Aethyr quietly uses its own on-device support instead. The app still works, and it stays private.