language: ruen

Knock Chat & Call Privacy Policy

Effective date: November 10, 2026.

1. Who we are

The Knock Chat & Call app ("KNOCK", "the app") is developed by VMA-TEAM. Data controller: Vadim Aleksandrovich Vasilkov (Russian Federation).

For questions about this policy, write to blackfire2001@mail.ru. Website: https://myknock.ru

2. In short

KNOCK has no sign-up: no phone number, e-mail or password is required.
The app gives each user an identifier called a KNOCK ID. People find each other only by this ID.
Our server stores only your KNOCK ID and your device's push notification tokens.
The server only relays messages, files and calls to the other person and does not store them. If the other person is offline, the data is not kept and is not delivered later.
Your name, avatar, contact list and messages are stored only on your device and are never sent to the server.
We show no ads, do no tracking, and do not sell or share data with third parties for marketing.
You can delete your profile in the app at any time.

3. What data is processed

3.1. On our server

Data	Purpose	Retention
KNOCK ID	to deliver messages and calls to you	while the profile exists
Push notification tokens (Apple Push Notification service, including VoIP)	to notify you of a new message or incoming call when the app is closed	until the profile is deleted or the device changes the token
Technical session data: IP address, ports, session key	to keep the connection alive	in server memory only, for the duration of the session; never written to disk

3.2. On your device only

your profile name and avatar;
your contact list and the names you gave your contacts;
message history, sent and received files, call log;
encryption keys and session token (in the secure iOS Keychain);
the device key: it is created in the iPhone's secure hardware (Secure Enclave) and never leaves it;
app settings, including Face ID lock.

This data never leaves your device, except when you yourself send a message or file to someone. It is not included in iCloud backups.

3.3. What we do not collect

We do not collect your phone number, e-mail, phone address book, location, advertising identifiers, or data about your activity in other apps. The app contains no third-party analytics or advertising.

4. Messages, files and calls

Messages, files, voice and video calls pass through our server in encrypted form. The server does not store their content: it relays the data to the other person and immediately discards it. If the other person is offline, the data is not stored and will not be delivered later; the other person may receive a push notification about the attempt to reach them.

5. Device permissions

The app asks for access only for specific features, and you can decline or revoke access in iOS Settings:

Microphone: voice and video calls.
Camera: video calls and scanning the QR code when moving your profile.
Photos: choosing photos and files to send and for your avatar.
Face ID: app lock, if you turned it on. Face ID data is processed by iOS; the app never receives it.
Notifications: messages and incoming calls.

6. Who data is shared with

Data is not sold and is not shared with third parties, except:

Apple: to deliver a push notification, the server sends your device token and a short service message to Apple Push Notification service;
the person you communicate with: they receive what you sent them and your KNOCK ID;
where required by law.

The server is located in the Russian Federation.

7. Deleting your data

In the app, open Profile and tap "Delete profile". The server then deletes your device's push tokens, and your profile, contacts, messages, files and keys are erased from the device. This cannot be undone. Deleting the app from your device also erases all local data.

Messages you have already sent remain on the recipients' devices; we cannot delete them from there.

8. Children

The app does not ask for age and does not collect data that could reveal who the user is, including whether the user is a child. The server stores only KNOCK IDs and push tokens. The app's age rating is shown in the App Store.

9. Your rights

You can delete your data at any time (section 7), revoke permissions in iOS Settings, and ask questions about data processing at blackfire2001@mail.ru.

10. Abuse

If someone sends you offensive or illegal content, block them or remove them from your contacts. The app also lets you turn off incoming calls and messages from people who are not in your contacts, and has a block list.

11. Changes to this policy

We may update this policy. The new version is published at https://myknock.ru with its effective date. We will notify you in the app of significant changes.