Koko & Momo · Data deletion
Deleting your data
Koko & Momo keeps your progress on your own phone. Players under 18 have no account, and we keep nothing about them on our servers. If you are 18 or over and play together online, you can delete your account, with your friends, chats, photos and videos, in the game or by writing to us.
Delete your account (18 and over)
In the game, open PLAY TOGETHER and tap Safety and privacy. Then tap DELETE beside Delete my account and confirm. We delete your account (the keyed hash of your phone number, Facebook ID or Google or Apple account ID, its country, your date of birth, how you signed in, the terms you accepted, your game name and your chosen avatar) and everything else our servers keep about you: your friends, blocks, duo streaks, board points, challenge progress, chats, and the photos and videos you sent or received.
We keep only:
- reports you made or received, with the messages, photos and videos in them, for 180 days;
- if your account was banned, the keyed hash of its phone number, Facebook ID or Google or Apple account ID, for as long as the ban lasts, so the same one cannot sign up again;
- if your account's online play was paused when you deleted it, the keyed hash of its phone number, Facebook ID or Google or Apple account ID with the pause, so a new account made with it is paused too: after an under-18 report, until our team has looked or for up to 180 days; for a pause of a set length, until it ends;
- anything the law requires us to keep, for as long as it requires.
Our online play database is backed up, encrypted, so that it can be restored after a failure. What you delete stays in those backups until they are replaced, for up to 14 days; if a backup is ever restored, we delete your account again.
If you delete your account while your phone is offline, the game shows “Deleting… it finishes when you're online”: your phone keeps the request and sends it the next time it connects.
After that the game starts a new anonymous player with a new player number and a new game name. It is not linked to the old account, and it is deleted when it has not been used for 13 months.
Deleting your account does not cancel a Club subscription: cancel it in Google Play or the App Store. Avatars and other purchases stay recorded with your store account.
If you did not finish making an account
When you give an adult date of birth, the game makes an anonymous player record on our servers: a random player number, a one-way fingerprint of a secret made on your phone, a game name made by the game and the avatar picture you chose. It holds no phone number and no date of birth. If you never finish making the account, this record is deleted when it has not been used for 13 months. If you finish making the account and then delete it, the record is deleted with it.
Remove Facebook
1. In the game, open PLAY TOGETHER → PLAY WITH FACEBOOK FRIENDS and choose LOG OUT OF FACEBOOK.
2. In Facebook, go to Settings & privacy → Settings → Apps and websites, find Koko & Momo and choose Remove. Facebook then stops sharing your name, ID and friends list with the game.
For Facebook friends play, our relay only holds your Facebook ID while the game is open and connected, and forgets it when you close the game. If you signed in to an account with Facebook, delete the account as described above to remove the keyed hash of the ID that we keep with it. The same goes for an account made with Google or Apple (13 November 2026): deleting it removes the keyed hash of its Google or Apple account ID. You can also stop the game's sign-in in your Google account (Security → Your connections to third-party apps & services) or your Apple ID (Sign in with Apple).
Delete your game progress
Your stages, stars, coins, outfits and settings are kept on your phone, not by us. Uninstall the app, or clear its data in your phone's settings, and they are deleted from the phone; your phone's own backup to your Google or Apple account may keep a copy until you remove it there.
Ask us
You can also ask us to delete your account or data without using the game: write to hello@quantumcat.studio with your game name and how you signed in (and the phone number, if you used one), so we can find it. If you want us to confirm that nothing about you is held, ask us too. We reply within 30 days.
Parents and guardians: we keep nothing about players under 18 on our servers. If you think someone under 18 has made an account by giving a false age, write to us and we will close it.
For a complaint, write to our Grievance Officer, QuantumCat Terminal Private Limited, at hello@quantumcat.studio (subject: Grievance). We acknowledge complaints within 24 hours and resolve them within 15 days. To report a player or something they shared, see how to block and report.