CornersPrivacy policy
Last updated: 7 November 2026
The short version. Corners keeps your books on your phone and backs them up to your account, so a new phone gets them back. Your original photos stay in your gallery. A book is seen only by you and the people you invite. We don't sell data, show ads or use trackers.
Who we are
Corners is made by Slow Things. For anything about privacy, write to hello@slowthings.studio.
What we store when you sign in
| Account | The account ID, name and email address that Google (or Apple) share when you sign in. Your first name is shown to the people in your shared books. |
|---|---|
| Your books | Book titles, pages, notes, layout, and a resized copy (about 2000 px, around 0.4 MB) of each photo you paste. |
| Date and place | The date a photo was taken and, if you keep a place tag, its location. Notes keep the place you tag them with. |
| Shared books | Everything in a shared book is visible to everyone in that book, including the place tags. |
| Plus | Whether you have Plus and until when. Payments are handled by Google Play; we never see card details. |
| Notifications | A push token, only if you allow notifications, so we can tell you when someone adds to a shared book. |
Without an account ("Try without an account"), everything stays on your phone and nothing is sent to us.
What stays on your phone
- Your original photos. Corners reads the ones you pick. It never uploads the originals.
- Free up space looks for similar photos on your phone. Nothing from that scan is uploaded. Photos are deleted only after you confirm, and Android asks you again.
- Shrink big photos makes a smaller copy on your phone and replaces the original only after a clear warning and your confirmation.
- Your location is read only when you choose "Where I am" for a place tag, or take a photo in Corners with place tagging on. It is never tracked in the background.
Where it lives and who helps us
| Supabase | Database, sign-in and photo storage, in the European Union (Frankfurt, Germany). Data is encrypted in transit. |
|---|---|
| Sign in with Google, Google Play billing, and push notifications (Firebase Cloud Messaging). | |
| RevenueCat | Keeps track of Plus purchases. It receives your Corners account ID and your purchase receipts, not your name, email or photos. |
| OpenStreetMap | Map tiles. Your phone asks for the part of the map you look at; no account information is sent. |
These providers process data only to run Corners for you. We don't use analytics or advertising SDKs in the app.
Deleting your data
Remove a photo or note from a page, or delete a whole book, at any time. To delete everything: Settings › Delete account. This removes your account, the books only you are in, and every photo and note you added. Shared books you started pass to the next person in them, so their memories stay. Details on the account deletion page.
Children
Corners is not meant for children under 13, and we don't knowingly collect their data.
Your rights
You can ask for a copy of your data, a correction, or its deletion by writing to us. If you are in the EU or UK, you can also complain to your data protection authority.
This website
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Changes
If this policy changes, we'll update this page and the date at the top.