๐ฎ Calculator Rush is designed for safe and educational play. It does not contain ads or third-party tracking.
๐ No account required. The app works fully offline. All your progress (XP, achievements, settings) is stored locally on your device.
โ๏ธ Optional cloud sync allows you to back up your progress using Google Sign-In via Firebase.
๐ซ No selling of data. We do not sell or share your personal information with advertisers.
Calculator Rush is developed and maintained by Adeleke Olasope, trading as Empyreal Works. For privacy-related questions, contact us at hello@empyrealworks.com.
All features are available without creating an account. In guest mode:
If you choose to sign in via Google, the following features become available:
You can delete your account and all associated cloud data at any time from within the app settings.
Account credentials
Handled entirely by Firebase Authentication (Google). We do not store passwords. We only receive your name, email, and profile picture from Google to personalize your experience.
Game Progress Firestore
When signed in, the following progress data is synced to your private Firestore document:
| Permission | Purpose |
|---|---|
| Vibration / Haptics | Used to provide tactile feedback during button presses and game events. |
| Internet | Required only for cloud sync and viewing external links. Not used in guest mode. |
When you use cloud features, the following Google services are involved:
| Service | Purpose |
|---|---|
| Firebase Authentication | Manages sign-in credentials. Privacy policy |
| Cloud Firestore | Stores game progress in your private user document. |
No analytics platforms, advertising SDKs, or other tracking tools are used.
Calculator Rush is built for all ages and emphasizes safety. In guest mode, we collect no personal data. We encourage parents to supervise their children's use of any app with cloud features.
If we update this policy, the revision date will be updated. Significant changes may be announced within the app.
Adeleke Olasope / Empyreal Works
hello@empyrealworks.com
Sparking joy and learning through math! ๐