Gravity Cascade is a cosmic drop-and-merge puzzle game for iPhone with real physics. Drop, merge, and build a black hole, and keep merging your way up to a Big Crunch before the board fills.
Gravity Cascade is free on the App Store.
Last updated: November 2026
Gravity Cascade does not ask for an account, and the game itself does not collect, store, or share your personal information. Your progress and scores stay on your device. The only data collected while you play is collected by Google AdMob, the advertising service that shows ads in the game. This policy explains what that means.
Gravity Cascade shows ads through Google AdMob. To deliver ads, measure how they perform, and prevent fraud, Google's software in the app may collect:
Device and app information: your device model, iOS version, app version, and language.
Network information: your IP address, which Google may use to estimate your general location (country or city, not your precise location).
Ad interactions: which ads were shown and whether you tapped them.
Advertising identifier: Apple's advertising identifier (IDFA), only if you allow tracking when iOS asks.
This information is collected and processed by Google, not by us. Google explains how it uses this data at policies.google.com/technologies/partner-sites and in its Privacy Policy at policies.google.com/privacy.
Tracking: if iOS asks whether Gravity Cascade may track you, you can choose "Ask App Not to Track." You can change this at any time in Settings → Privacy & Security → Tracking. Without permission, Google cannot use your advertising identifier, and the ads you see are less personalized.
Personalized ads: you can manage ad personalization with Google at adssettings.google.com.
Gravity Cascade is not directed at children under 13, and we do not knowingly collect personal information from children.
If this policy changes, the updated version will be posted on this page with a new date.
Questions about this policy or about Gravity Cascade: mmelcher@gmail.com