Privacy policy
Blocktide is a mobile game made by Zulapp. This page says what the game collects, why, and who else is involved. Last updated 14 November 2026.
The short version
- There is no sign-in. We do not ask for your name, email address, phone number, contacts or location.
- If you use the online features, the game stores an anonymous player id, the display name shown on leaderboards, your scores and your saved progress on our server.
- The free version shows ads from Google AdMob, which uses your device's advertising id.
What the game stores on our server
| What | Why |
|---|---|
| A random player id and a one-way hash of a secret kept on your device | To tell players apart without an account |
| Your display name (generated, and changeable by you) | Shown to other players on leaderboards and in duels |
| Scores, duel results, friend links and challenges | Leaderboards, duels, rivals and the weekly tournament |
| A copy of your game save (progress, settings, power-ups held) | So progress can be moved to a new phone |
| A push notification token for your device, if you allow notifications | To tell you when someone challenges you or finishes your duel |
This data is held by our hosting provider, Supabase, on servers in the United States. Display names and scores are visible to other players. Nothing here is sold, and it is not used for advertising.
Other companies involved
| Company | What for | What they receive |
|---|---|---|
| Google AdMob | Ads in the free version | Advertising id, device and approximate location information derived from your IP address, and how you interact with ads. See how Google uses data. |
| Google Play Billing | Purchases (Remove ads, power-up packs) | Handled entirely by Google; we never see your payment details. |
| Firebase Cloud Messaging (Google) | Delivering notifications | A device token and the notification text. |
| Unity | The game engine and its store connection | Basic device information needed to run the game and complete purchases. |
| Supabase | Hosting the data listed above | That data. |
You can reset or delete your advertising id, or opt out of personalised ads, in your phone's settings. Buying Remove ads turns off the ads between runs.
Notifications
The game asks before sending notifications and works without them. You can switch them off at any time in your phone's settings, and the daily reminder has its own switch in the pause menu.
Children
Blocktide is not directed at children under 13, and we do not knowingly collect personal information from them.
Keeping and deleting data
Online data is kept while you play. To have your player record, scores and saved progress deleted, email support@blocktide.app with your player name and a recent score (or your recovery code from the New phone screen) so we can find the record. We delete within 30 days. Uninstalling the game removes everything stored on your phone.
Your rights
Depending on where you live, you may have the right to see, correct or delete the data we hold about you, or to object to how it is used. Write to the address below and we will help.
Changes
If this policy changes, the new version will be posted here with a new date.
Contact
Zulapp · support@blocktide.app