Apple Foundation Models in Little Vault

On-device writing help so private family words stay on the iPhone.

Where it shows up

When a parent writes a sealed letter, a quiet 'help me say this better' option uses Apple Foundation Models on-device.

Why on-device matters

Letters to a child often hold the most private words you'll ever write. Keeping the model on the device means those words don't travel to a cloud server for inference.

When it appears

The button only shows on devices where Apple Intelligence is provisioned. Everywhere else, the editor stays the same.