Math Machis Privacy Policy
Effective date: 4 October 2026
Summary
This policy explains how the Math Machis app for Android ("the app", "we", "us") handles information. Math Machis is a matchstick puzzle game. It needs no account, and we do not collect your name, email address, phone number, contacts, photos or precise location. Your game progress stays on your device. The app uses Google services that process limited device data:
- Google AdMob to show ads.
- Firebase Cloud Messaging to send push notifications, if you allow them.
- Cloud Firestore to download the app's ad settings.
We do not sell your personal data. Details are below.
Data stored on your device
The app saves the following locally, using your device's app storage:
- Puzzle progress: stars, solved levels, your daily-challenge streak and endless-mode best score.
- Your hint balance.
- Settings: sound on or off, and English or Hindi.
This data is not sent to us or to anyone else. Uninstalling the app, or clearing its storage, deletes it permanently.
Advertising (Google AdMob)
Math Machis shows banner ads on menu screens, occasional full-screen ads between levels, and optional reward videos that give you extra hints. Ads are provided by Google AdMob. To serve, personalise (where permitted) and measure ads, and to prevent fraud, the Google Mobile Ads SDK may collect:
| Data | Purpose |
|---|---|
| Advertising ID and other device identifiers | Ad serving, frequency capping, measurement, and personalisation where you have allowed it |
| IP address (used for approximate location) | Ad serving and fraud prevention |
| App interactions with ads, and diagnostics | Measuring ad performance and keeping the SDK stable |
Google processes this data under its own terms. See how Google uses information from apps that use its services and the Google Privacy Policy.
Push notifications (Firebase Cloud Messaging)
The app can receive notifications such as new puzzles, reminders and news. On Android 13 and later it asks for your permission first. If you allow them, Firebase Cloud Messaging (provided by Google) creates the following for this install:
| Data | Purpose |
|---|---|
| FCM registration token and Firebase installation ID (random identifiers for this install, not linked to your name or account) | Delivering notifications to your device |
| Device and app information (such as app version, operating system and language) and IP address | Delivering notifications and keeping the service reliable |
The app subscribes to a general topic so that announcements reach all players. We do not use notifications for advertising from third parties. You can turn notifications off at any time in your device settings (Android: Settings → Apps → Math Machis → Notifications). Turning them off does not affect the game.
App configuration (Cloud Firestore)
When the app starts, it downloads its ad settings (which ad units to use, and whether ads are on) from Google Cloud Firestore. This is a read-only request: the app sends no game data, progress or personal information. As with any internet request, Google's servers receive your IP address and basic technical details to answer it. If the download fails, the app uses settings built into the app.
Sharing with third parties
We share data only with the service providers named in this policy (Google AdMob, Google Firebase and Google Play), and only for the purposes described. We do not sell personal data, and we do not share it with data brokers. We may disclose information if required by law.
Google's privacy terms: Google Privacy Policy, Privacy and Security in Firebase, AdMob and privacy.
Permissions the app uses
| Permission | Why |
|---|---|
| Internet and network state | Loading ads, notifications, app settings and update checks |
| Notifications (Android 13+) | Showing push notifications; optional |
| Advertising ID | Used by the Google Mobile Ads SDK, as described above |
The app does not request access to your camera, microphone, contacts, files, or location.
Your choices about ads
- Consent (EEA, UK and Switzerland): on first launch the app shows Google's consent form. You can change your choice at any time in Settings → Ad privacy options.
- Advertising ID: you can reset or delete it in your device settings (Android: Settings → Privacy → Ads).
- Reward videos are always optional.
App updates
On Android, the app uses Google Play's in-app update service to check whether a newer version is available and, if so, to offer the update. That check happens between your device and Google Play. We receive no personal data from it.
Children
Math Machis is a general-audience puzzle game. It is not directed at children under 13 (or the minimum age in your country), and we do not knowingly collect personal information from children. If you believe a child has provided personal information through the app, contact us and we will help get it removed.
Security and retention
All data the app sends is encrypted in transit (HTTPS/TLS). We do not run our own servers, and we do not keep a copy of your game data.
- Game data stays on your device until you clear the app's storage or uninstall it.
- Notification identifiers are kept by Firebase while the app is installed. They stop working when you uninstall the app, and Firebase deletes inactive identifiers automatically (generally after about 270 days without use).
- Advertising data is retained by Google according to its own policies.
Deleting your data
Because the app has no accounts, you can delete everything it stores by uninstalling it, or with Settings → Apps → Math Machis → Storage → Clear storage. To ask us to delete the notification identifiers linked to your install, email us at the address below; we will respond within 30 days. You can reset your Advertising ID in your device settings.
Your rights
Depending on where you live (for example under GDPR in the EU/UK, or CCPA/CPRA in California), you may have rights to access, correct, delete, or object to the processing of personal data, and to withdraw consent. Because we hold no account data, most requests are handled by clearing the app's storage, turning off notifications, your device's ad settings, or by Google for advertising data. You can also contact us.
Changes to this policy
If this policy changes, we will update this page and its effective date. Significant changes will also be noted in the app's release notes.
Contact
Developer: Math Machis
Questions or requests: amarj234@gmail.com