Last updated October 23, 2026. This covers Spark on the web, the iOS app and the desktop (Steam) app.
Spark has no accounts, ads or tracking, and collects nothing that identifies you.
Your progress is saved on your device. In the iOS app, a copy is also kept in your own iCloud account (Apple's iCloud key-value storage), so it follows you to other devices signed in to the same Apple Account. In the Steam version, Steam Cloud can keep a copy the same way. The developer can't see these copies; they're stored by Apple or Valve under their privacy policies.
To delete it: Menu → Reset game deletes the save on this device and its iCloud copy. Deleting the app, or clearing this site's data in your browser, removes it from that device too.
The game counts anonymous events, for example how many people start, reach each phase and finish, and which kind of device they play on (such as iPhone, iPad, Android, Windows or Mac). It uses GoatCounter, which doesn't use cookies, doesn't store IP addresses (it uses them only to estimate the country) and doesn't track you across apps or websites.
The counts are totals, not records about a person, so there's nothing that could be linked to you, looked up or deleted for you. They aren't shared or sold, and are kept as totals for as long as the game runs. If you'd rather not send them, play offline: nothing is sent then, and content blockers stop them in a browser.
Spark is suitable for all ages and collects no personal information from anyone, including children.
If this policy changes, this page will say so and show a new date. Questions: @tensafefrogs on X.