Why Penna exists.

In January 2026, a big chat assistant started slipping sponsored replies into free conversations. It cleared $60 million in the first quarter. Sit with what that means for an app that knows what you’re anxious about, shopping for, dreaming up.

Here’s the thing: your iPhone can already do most of it. Every iPhone and Mac with Apple silicon runs capable language models right on the chip. No signal required, no servers, nothing ever leaves the device.

Penna is a chat app that brings all of that together. No ads, no account. Just your iPhone.

Sponsored replies: Nimbus AI changelog, Jan 2026. Revenue: The Signal Report, April 2026.