Cat Letter · Contact & Support

Every day Mantou watches over

If you run into trouble using Cat Letter, or just want to tell us something, reach out below.

Mantou will pass it along.

Get in touch

We’ll reply within 3 business days.

Whether you want to report a bug, suggest something, or share a story about how you use it — you’re welcome to write to Mantou.

FAQ

Are my days safe?

Every day, every letter, every memory postcard you write is kept only on your own device — never uploaded to a server, never shared with third parties.

For our full privacy promise, see the Privacy Policy.

If I delete the app, are my days still there?

Deleting the app also deletes everything stored on your device. We keep no cloud backup.

If you’re just switching devices, we suggest: tidy up the days you want to keep on your old device first, then move them via iOS’s iCloud backup (that’s Apple’s backup mechanism — it doesn’t go through our servers).

Who is Mantou?

Mantou is a cat who lives in a pixel cottage — the letter-carrier cat of this app.

Cream-colored body, orange patches, not much for talking, but never forgets a thing. You place a day in its home, and it watches over it for you, bringing the letter when the day arrives.

Its friend is called Seven, who sometimes watches over things too. You can find the full introduction to Mantou in the app, under Settings → About Mantou.

Where can I download it?

Search “Cat Letter” on the App Store, or go straight to the App Store link.

It currently supports iOS devices (iPhone). iPad and other platforms aren’t supported yet.

I have more questions / suggestions

Just write to [email protected]. We read every letter.

Cat Letter is a private companion app for everyday life, made by an independent team. We believe the days worth remembering deserve to be watched over, gently.