MockUpThis is an app for making app prototypes on the Mac. This policy says, in plain words, what happens to your data. There is very little to say: we never receive it.
01What we collect
Nothing. There is no sign-up and no user account, and no server of ours receives your projects, what you search for, your device name or a usage log.
02What stays on your Mac
Your projects, their undo history, the pictures you add and your settings are kept in the app’s own storage on your Mac. Files you export (PNG pictures, PDF, .mocky.json projects) go to your Downloads folder. None of it is uploaded. Deleting the app deletes its storage. We cannot read it.
03What the app asks the internet for
Some features ask public services for things, only when you use them:
- Photo search sends the words you type to Openverse (api.openverse.org) and Wikimedia Commons (commons.wikimedia.org). Random photos come from Picsum (picsum.photos).
- Icon search sends the words you type to Iconify (api.iconify.design). The 1,900 built-in icons need no connection.
- Avatars and abstract art come from DiceBear (api.dicebear.com).
- Fonts for the app style you pick come from Google Fonts (fonts.googleapis.com and fonts.gstatic.com).
These are plain requests: nothing about you or your projects is sent with them. As with any request, the service that answers sees the internet address it came from; each one has its own privacy policy.
04Share links
A share link carries your whole prototype inside the link itself. Nothing is uploaded to make it. Whoever you send it to can see the prototype, so only send it to people you want to see it.
05AI agents
If you turn on “Let AI agents control MockUpThis” in Settings (it is off until you do), the app listens on your Mac only (127.0.0.1), with a private key, for the helper that AI agents such as Claude Code or Codex run. What your agent sends to its own company is governed by that agent and its company, not by us; MockUpThis sends nothing to them by itself.
06Purchases
The free trial, the lifetime unlock and the monthly subscription go through Apple’s App Store. Apple handles the payment; we receive no card details, name or email from it. The app only checks with Apple, on your Mac, whether you have the trial, the unlock or an active subscription.
07Children
MockUpThis is made with students in mind and collects nothing from anyone, children included.
08Your control
Because we never receive your data, there is nothing for us to delete on request. You can delete any project in the app, turn AI agents off in Settings, or delete the app, and what it kept goes with it.
·Changes to this policy
This policy may be updated from time to time; please review it periodically. Changes take effect as soon as they're posted on this page.
·Contact
Questions about this document are welcome. Reach us at mcebrian (at) ik.me. See also the Terms.