zitto
Private AI for iPhone

Ask anything.
Tell no one.

Everything you ask Zitto stays on your iPhone and belongs to you. No account, no servers, and no copy anywhere else.

Coming soon to iPhone How your data stays yours

One model download, then it works offline.

Your data never becomes ours.

A question typed into a cloud assistant is sent to a company and can be kept on its servers, where it can be reviewed, leaked or requested by others. A question asked in Zitto never becomes a record anywhere but your phone.

You hold the only copy

Your chats are saved on your iPhone and nowhere else. We could not read them, sell them or hand them over, because we never have them.

Only you can open it

Zitto locks with Face ID, so your history stays closed to anyone who picks up your phone.

It stays out of the cloud

Chats are left out of your iCloud backup unless you decide otherwise.

You can destroy it

Erase everything removes every chat, model and setting. There is no other copy to chase.

Don't take our word for it.

Every AI app says it is private. Here are three checks you can run yourself in a minute.

Check 1

Turn on airplane mode

Ask Zitto something. It answers the same, because the model is on your phone and nowhere else.

Check 2

Open the Privacy screen

It lists every time Zitto has gone online, and why. Downloading a model is the only reason it ever does. A Zitto Plus purchase is handled by Apple's App Store, not by Zitto.

Check 3

Tap Erase everything

Chats, models and settings are removed from your iPhone. There is nothing left anywhere else to delete.

What Zitto knows about you

Nothing.

No accountYou never sign up or sign in.
No analyticsThe app contains no tracking or reporting code.
No adsThere is nothing to target, and no one to sell it to.
No chat serversZitto has no server that could receive your questions.

What you can do, all on the phone

Show it thingsAttach a screenshot, a photo, a PDF or a text file and ask about it. Every model reads images.
Talk to itDictate a question, have the answer read back, or hold a whole conversation by voice. Speech recognition is pinned to the device.
Trust the numbersArithmetic, percentages and unit conversions go through a calculator on your phone, not the model's memory.
Share to ZittoSend a web page, a photo or a file from any app, or say "Ask Zitto" to Siri.
Make it yoursTell Zitto how to answer and what to remember about you. It stays on the phone with everything else.
Keep your historyExport every chat as a file and import it on a new iPhone. Nothing syncs anywhere.

The honest trade-off

Zitto runs a small model on your phone, not in a data centre. It doesn't know today's news, it is less capable than the largest cloud assistants, and it can be wrong. It is built to say when it isn't sure, and to use a calculator on your phone rather than guess at numbers.

That is the trade: a little less power, and your questions stay yours.

Questions

Does it need the internet?

Only to download the model you choose. After that it works with no connection at all. Buying Zitto Plus goes through Apple's App Store, as with any app.

What happens to my chats?

They are saved on your iPhone, locked with Face ID, and left out of your iCloud backup unless you choose otherwise. You can erase them at any time.

Could Zitto ever see what I ask?

No. Your questions are answered by a model running on your iPhone, and Zitto has no server that could receive them.

Which model does it use?

Up to three, depending on your iPhone: Piano (about 625 MB), Mezzo (about 1.7 GB) or Forte (about 3 GB). Zitto suggests the best fit and only offers Piano where Mezzo does not fit. They are built on open-weight models, and the licences are listed in the app under Privacy, then Acknowledgements.

Your questions are yours. Keep them that way.

Coming soon to iPhone

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