Talk about what you want. See only what you both want.

A private app for couples and small groups to talk about what they want and don't. Each person answers alone. Only what everyone wants appears.

Coming soon to the App Store and Google Play.

Six possible answers

Every activity gets an answer from you, given in private. There are no right answers.

The first four appear only when there is a match. "No" and "Hard limit" never appear.

How it works

Learn
Read short guides on communication, consent and care. At your own pace, with no rush.
Answer in private
Each person answers alone, on their own phone, a list of activities described calmly. There are six possible answers.
Connect with a link
Invite the other person with a private link. Both phones show a safety code. Compare it by voice or video, so you can be sure you are talking to each other.
See only what is mutual
The app shows only what you both wanted. The rest stays where it is: private.

What we can promise, and what we cannot.

End-to-end encrypted: What you share with the group is encrypted on your phone before it leaves, using the MLS protocol. Only people in the group can read it.
No accounts: We do not ask for a name, email or phone number. Your identity is a key kept on your phone.
The server reads nothing: Our server only sees ciphertext, public keys and random identifiers.
No backups: There are no accounts and no backups. Your answers, notes and history stay on your phone, encrypted. The server only stores, encrypted, what you share with your group.
Data stored in the EU: Groups’ encrypted data is stored in the EU, on Cloudflare, which is a US company. Traffic passes through Cloudflare’s global network.
No ads, no tracking: No ads, no usage analytics, no crash reports sent to third parties.

Your "no" stays with you: The app never shows anyone your "no" or your hard limits.
Hidden categories: If you hide a category, it looks to everyone else as if you had answered "no". Nobody can tell that you hid it.

To find what you have in common, the other person's app receives your answers, including your "no" answers. Our app never shows them. A tampered app could.
If someone answers "yes" to everything, they learn everything you said yes to.
If you leave a group, the other person keeps on their phone what had already been revealed.
The server can see which public keys share a group and when there is activity, but not the content.
There are no accounts and no backup. If you lose your phone, you start over.

Knotwell is for adults aged 18 and over. The app asks you to confirm your age before anything else.