What the game collects, who else receives it, and the choices you have.
Last updated 9 October 2026 · Applies to the game
Chain Reactor on Google Play and Chain Reactor: Blast Puzzle
on the App Store (com.tentaculo.chainreactor) and to nothing else.
| What | Why |
|---|---|
| Your progress | Level reached, settings and statistics. Kept on your phone only; it never leaves it. |
| Device identifiers | Including the advertising identifier, used by Google AdMob to show ads. On iPhone it is only available if you allow tracking when asked. The ad network also estimates an approximate location from your internet address, and records which ads you see and tap, plus crash and performance information. |
| How the game is played | Measured with Google Analytics for Firebase, so we can balance the levels and see where players give up: sessions and time played; the screens you open; game events (a level starting and ending with its number, kind, time, how many balls you destroyed against the target, shots used and your longest chain, and whether you won, lost or left it); the ad between levels and whether it showed; the game cards you tap in our other-games screen; the No Connection notice; and in-game error messages. Plus the app version, device model, system version, language and approximate country. Filed under a random id for this install of the app (plus the advertising identifier where the ads consent and, on iPhone, tracking allow it), never under your name or email. Google Analytics deletes the detailed events after at most 14 months. |
| Crash reports | If the app crashes, Firebase Crashlytics (Google) receives a report: the stack trace (where in the code it failed), device model, system version, app version, the time, and a random Crashlytics id for this install — never your name or email. Used only to find and fix crashes. Google keeps crash reports for 90 days. |
The game does not ask for your location, your contacts, your photos, your microphone or your camera, and it asks for no permissions at all.
Nothing is sold, and nothing is handed to anyone not on this list.
The game may show a full-screen ad between levels. In the European Economic Area and the United Kingdom a consent screen appears before any ad is requested, and what you choose decides whether ads are personalised. You can change it later from Privacy Settings in Options. On iPhone, the game also asks whether it may track you; if you say no, ads are still shown but are not personalised, and you can change your answer in Settings › Privacy & Security › Tracking.
The same answer governs measurement. Until the consent screen has been answered, the game sends no measurement at all: it starts switched off and is turned on only by your reply. Where the consent screen applies, measurement keeps an identifier on your phone only if you allowed storing information on your device; if you did not, it sends only counts with no identifier attached.
Because there is no account, there is nothing stored about you on our side. Deleting the game deletes your progress with it.
The gameplay measurement is filed under a random id for the install, not under you, so there is nothing to look it up by; Google Analytics deletes it after at most 14 months. Deleting the game stops it, and a reinstall starts with a new id.
To reset the advertising identifier, use your phone's settings: on Android, Settings › Privacy › Ads; on iPhone, Settings › Privacy & Security › Tracking.
The game is not aimed at children under 13, and we do not knowingly collect anything about them.
If you are in the EEA or the UK, you can ask what is held about you, ask for it to be corrected or deleted, or object to how it is used. One email does any of them, free of charge.
If what the game collects changes, this page changes with it, and the date at the top moves.