Proto has no accounts, no ads and no tracking. This page explains what the app keeps, what it loads and what it never sees.
Updated October 17, 2026 · Proto 2.0 for iPhone, iPad and Android, and this website
Us
No Proto servers. Nothing is sent to us.
Your library, previews and settings are saved on the device, not with us. We can't see them.
There's nothing to sign up for. The app has no analytics, no ads and no tracking.
Proto is free. There are no ads, no in-app purchases and no paid version.
For each prototype in your library: its link, its title, a preview screenshot and when you last opened it. Also your settings and any .proto files you import. All of it stays in the app on your phone.
Your phone's regular iCloud or Google backup includes your library and settings, as it does for other apps.
Proto loads the prototype straight from where it's hosted, like Figma, ProtoPie or your own server, the same way a browser would. That service sees the visit, and its own privacy policy applies.
Figma prototypes play in Figma's embed player, so Figma can tell they're playing in Proto. If a page asks about cookies, Proto declines the optional ones for you.
You only need to sign in for private or team-only prototypes. You sign in on the tool's own login page, so Proto never sees your password. The login stays in the app on your phone until you sign out or clear website data in Settings.
Links and QR codes are made on your phone, and files go through AirDrop, Quick Share or the share sheet. Nothing passes through us.
A shared link contains the prototype's address and title, so anyone you send it to can open it if the prototype allows that.
Finding prototypes nearby is off until you turn it on. It looks for prototypes a computer on your own Wi-Fi is sharing, and only talks to that computer.
On iPhone and iPad, Proto asks to add to your photos when you save a QR code, and for the local network when you turn on finding prototypes nearby. On Android, it uses the internet, and storage only on Android 8 and 9 to save a QR code.
No camera, location, contacts or microphone. Proto reads the clipboard only when you tap Paste.
To match the status bar to a prototype, the Android app reads the clock in the prototype's first frame with Google's ML Kit. This happens on the phone, and the image never leaves it. Google's library may send Google anonymous statistics about how it performs.
Apple and Google handle downloads, updates and ratings. If you've agreed in your phone's settings to share analytics with app developers, they show us totals such as downloads and crash counts, without telling us who you are.
Your language, light or dark mode, and iPhone or Android. They're kept in your browser and never sent anywhere.
Everything, fonts included, comes from this server. It loads nothing from anyone else. Like any website, the server receives your IP address to send you the page.
Nothing is stored with us, so there's nothing for us to delete. Copies in your phone's backup follow your backup settings.
Write us at legal@workfor.pizza
Proto
Figma, ProtoPie, Sketch & more