Privacy AI

Privacy AI takes a straightforward approach to AI privacy: the model runs where you do. Rather than sending your messages to a remote server, the app downloads an open-source model to your iPhone, iPad or Mac and performs inference on-device. That means no account-driven data collection, no conversations leaving your hardware, and the ability to keep chatting on a plane, in a basement or anywhere else without a signal.

The app also exposes the controls that power users expect from local models. You can adjust sampling temperature, write custom system prompts and change the Top-p value, which lets you steer tone, creativity and answer length rather than accepting a single fixed behaviour. A list of downloadable models is maintained in-app, and the app dynamically shows only those that fit the RAM and chip of the device you are using, so you are not offered something that will stutter.

It is an indie project by a solo developer, and the paid tiers exist specifically to fund the work of quantising larger models for Apple hardware with limited memory. A free download includes one model, subscriptions (monthly or yearly) unlock the rest, and a one-time Founders purchase is available for people who prefer to avoid recurring billing. Family Sharing is supported on subscriptions.