Privacy Policy for Grainfall: Sand Sort Puzzle

Last updated: 30 September 2026

Grainfall ("the game", "the app") is developed and published by Angels Bite ("we", "us"). This policy explains what the game collects, why, and what you can do about it. It covers both versions of the game:

the Android app on Google Play, package name com.angelsbite.grainfall
the iOS and iPadOS app on the Apple App Store, bundle ID com.angelsbite.grainfall

Where the two versions differ, the difference is spelled out below.

We do not ask you to create an account, and we never ask for your name, email address, phone number, or postal address. We do not run servers of our own: the game talks only to the Google and Apple services listed in this policy.

The short version

Your puzzle progress is stored on your device and backed up to your own cloud account so it survives a new phone: Google Play Games on Android, iCloud on iPhone and iPad.
The game shows ads from Google AdMob, which collect device information and, on Android, an advertising identifier. On iPhone and iPad the game never asks for permission to track you, so the ad SDK cannot read your device's advertising identifier (IDFA). In the EEA, the UK and Switzerland you are asked for consent first, and can change your answer in the game's settings.
If you buy "Ad-Free Forever", the advertising SDK is never started on your device at all. It is not merely hidden; it does not run, and it collects nothing.
We use Google Analytics for Firebase and Firebase Crashlytics to understand how the game is used and why it crashes.
We do not sell your personal information.

What the game collects, and why

Game progress

Which levels you have completed, your fewest-moves score for each, and whether you own the ad-free unlock.

This is written to your device and backed up so that reinstalling the game or moving to a new device keeps your progress:

Android: if you are signed in to Google Play Games, it is stored as a Play Games saved game under your Google account.
iPhone and iPad: if your device is signed in to iCloud, it is stored in your iCloud account using Apple's iCloud key-value storage. There is nothing to sign in to inside the game. The copy lives in your own iCloud account; we cannot see it.

It contains no personal information beyond the progress itself.

Legal basis (EEA/UK): performance of a contract — providing the game you installed.

Advertising (Google AdMob)

From the second episode onward, a full-screen ad may appear after every second level you finish. To serve those ads, Google's Mobile Ads SDK collects your IP address, device and OS information, device identifiers, and your interactions with the ads shown.

Android: this includes your device's advertising identifier (AAID).
iPhone and iPad: the game never shows Apple's App Tracking Transparency prompt, so the SDK is never given access to your advertising identifier (IDFA) and we do not track you across other companies' apps and websites.

We do not receive or store this data ourselves. It is collected and processed by Google as an independent controller under Google's Privacy Policy and the Google Ads data disclosure.

If you purchase the ad-free unlock, this SDK is not initialised. No identifier is read and no ad requests are made.

Consent (EEA, UK and Switzerland): before the advertising SDK is started, the game shows Google's consent form, and ads are only requested once you have answered it. You can change your answer at any time in the game under Settings → Ad privacy. Outside these regions no consent form is shown. Android versions before 1.3.1 did not show this form.

Legal basis (EEA/UK): consent, collected through Google's User Messaging Platform consent form.

Analytics (Google Analytics for Firebase)

Anonymous, aggregated usage: app opens, session length, screens viewed, and a randomly generated app instance identifier. It is not linked to your name and we do not use it to identify you. It tells us things like which episode players stop at.

Legal basis (EEA/UK): legitimate interest in understanding and improving the game.

Crash diagnostics (Firebase Crashlytics)

When the game crashes, a report is sent containing the stack trace, device model, operating system version, and the state of the app at the moment it failed. This is what lets us fix bugs we cannot reproduce.

Legal basis (EEA/UK): legitimate interest in maintaining a working product.

Purchases (Google Play Billing and the App Store)

Grainfall offers one optional purchase: Ad-Free Forever, a single payment that permanently removes ads. It unlocks no levels; every level is free.

The transaction is handled entirely by Google Play on Android and by Apple's App Store on iPhone and iPad. We never see your payment card, billing address, or any financial details. The store tells the app only whether the unlock has been purchased, and the game stores that as a single true/false value alongside your progress. On iPhone and iPad, "Restore purchases" in the game's settings brings the unlock back after a reinstall or on a new device.

Legal basis (EEA/UK): performance of a contract.

Who your data is shared with

We do not sell your personal information and we do not share it with anyone for their own marketing.

Data is processed by these services, each under its own privacy policy:

Service	Platform	Purpose	Policy
Google AdMob	Android, iOS	Serving ads	https://policies.google.com/privacy
Google User Messaging Platform	Android, iOS	Asking for and storing ad consent	https://policies.google.com/privacy
Google Analytics for Firebase	Android, iOS	Usage analytics	https://firebase.google.com/support/privacy
Firebase Crashlytics	Android, iOS	Crash reporting	https://firebase.google.com/support/privacy
Google Play Games Services	Android	Saved-game sync	https://policies.google.com/privacy
Google Play Billing	Android	Processing the purchase	https://policies.google.com/privacy
Apple iCloud	iOS	Saved-game sync	https://www.apple.com/legal/privacy/
Apple App Store (StoreKit)	iOS	Processing the purchase	https://www.apple.com/legal/privacy/

Your choices

Change your ad consent (EEA, UK and Switzerland). In the game, open Settings → Ad privacy → Change.

Opt out of ad personalisation (Android). On your device: Settings → Google → Ads. You can reset your advertising ID or turn off ad personalisation there. On Android 12 and later you can delete the advertising ID entirely.

Tracking (iPhone and iPad). The game never asks to track you. To make sure no app can ask, turn off Settings → Privacy & Security → Tracking → Allow Apps to Request to Track.

Stop the saved-game sync (Android). Sign out of Google Play Games, or revoke the game's access at myaccount.google.com/permissions. Your progress then stays on your device only.

Stop the saved-game sync (iPhone and iPad). Open Settings → your name → iCloud, and switch Grainfall off in the list of apps using iCloud. Your progress then stays on your device only.

Remove everything held on your device. Uninstalling the game deletes your local progress.

Delete your cloud save (Android). Play Games saved games can be deleted from the Play Games app, under your profile → Settings → Delete Play Games account & data, which removes saved games for games you have played.

Your cloud save (iPhone and iPad). The iCloud copy holds only your level progress and the ad-free flag. It is stored in your own iCloud account under Apple's control, and we have no access to it.

EEA/UK and California residents. You have the right to access, correct, delete, or export your personal data, to object to processing based on legitimate interests, and to withdraw consent for advertising at any time. Because we hold no account for you, most of these are exercised directly through the Google and Apple controls above. For anything else, contact us and we will respond within 30 days.

Children

Grainfall is not directed at children under 13, and we do not knowingly collect personal information from them. If you believe a child has provided us with personal information, contact us and we will delete it.

Data retention

Progress stored on your device remains until you uninstall the game or clear its data. Cloud saves remain in your Google or iCloud account until you delete them. Analytics and crash data are retained according to Google's Firebase retention settings, which we set to the shortest period Firebase offers for user-level data.

Security

Data in transit between the game and Google's and Apple's services is encrypted with TLS. Purchases are processed entirely by Google Play or the App Store; no payment details ever reach the app or our systems.

Changes to this policy

If we change what the game collects, we will update this page and the "Last updated" date above. Material changes will also be noted in the app's release notes on Google Play and the App Store.

Contact

Angels Bite

Email: angelsbite.dev@gmail.com

If you are in the EEA or UK and are not satisfied with our response, you may lodge a complaint with your local data protection authority.