This policy describes the information the app stores on a phone and the information that leaves the phone. Learning does not require an account. Most progress never leaves the device unless a parent chooses to back it up.
Who the app is for
The app is a mental math trainer for children, used with a parent or guardian. A child can start by typing a name and choosing an icon. We do not ask for an email address, phone number, photo, contacts, or precise location.
Information stored on the device
The app saves learning data in local storage on the phone. That includes:
- A child profile: a random id, a name (up to 24 characters), an avatar icon, the date it was created, the selected level, stars, streak, and badge ids. A phone can hold more than one child.
- Practice answers, including Smart Practice and Number Catch: the question, the typed answer, the correct answer, whether it was right, the time, and which activity it came from.
- Exam results: the date, score, time, and the questions and answers from that exam.
- Lesson completion for that child.
- Settings such as how many digits appear, how many exam questions, and the exam time limit.
- A parent PIN, stored only on the device and not as the four digits themselves. The PIN is not included in a cloud backup.
- A flag that remembers whether one lesson or exam has already been finished, so the app knows when an ad may be shown.
- A backup code, after a parent creates one.
Uninstalling the app, or clearing its storage, deletes the copy that exists only on that phone.
Optional backup and the Board
Backup is off until a parent opens Parent, enters the PIN, and chooses to upload. Upload and restore need an internet connection. Practice still works if the upload fails.
An upload sends a backup to Google Firebase Cloud Firestore. The backup includes the child profiles (including names), practice answers, exam results, and lesson completion, stored under a short backup code. Anyone who has that code can restore the backup onto a phone. Treat the code like a key and keep it private.
The same upload can add a row to a public Board. The Board in the app shows an avatar, a label made from the avatar and part of an id (for example, “Star” plus four characters), and a count of correct practice and exam answers. It does not show the child’s name. A child with no saved practice and no exam is left off the Board. Opening the Board downloads those public rows. It needs an internet connection.
We use this cloud copy to restore a parent’s backup and to show the Board. We do not sell it.
Advertising
The app uses Google AdMob to show a full-screen ad before a lesson and before an exam, after the child has finished one activity. The first finished lesson or exam has no ad. Practice does not show this ad. If AdMob has no ad to show, the lesson or exam still starts.
Ad requests are configured as child-directed, with a maximum ad content rating of G. We do not build our own advertising profile of a child, and we do not use a child’s name or practice for advertising. Google may receive device and advertising identifiers as described in Google’s privacy policy and Google’s advertising technologies.
What we do not do
- We do not require an account or Google sign-in to learn.
- We do not ask for email, phone number, precise location, photos, or contacts inside the app.
- We do not put the child’s name on the public Board.
- We do not sell personal information.
- We do not use children’s information for interest-based advertising of our own.
Children
The app is directed to children. A parent decides whether to upload a backup. On-device learning data stays on the phone until then. We do not knowingly ask a child to send us contact details. A parent can delete phone data and request deletion of a cloud backup on the delete data page.
How long we keep information
- On the phone: until the app is uninstalled, its storage is cleared, or a restore replaces it.
- In Firebase: until we delete that backup. Use the delete data page and send the backup code. We will delete the backup stored under that code, and the related Board row, within 30 days, unless we must keep a copy to meet a legal duty.
Choices
- Skip backup. Learning, progress, the parent PIN, and rewards still work on the phone.
- Keep the backup code private, or ask us to delete the cloud copy.
- Limit ad tracking in the phone’s system settings. Because ad requests are child-directed, they are not meant to be personalized.
We cannot reset a forgotten parent PIN. It never leaves the phone. Clearing the app’s storage removes it, along with the local progress.
Security
Backup and ads are sent over HTTPS. The backup is protected by the short code, not by an account password. A person who learns the code can restore that backup. Local data is protected by the phone’s own lock and app storage.
Service providers
- Google Firebase Cloud Firestore, for optional backup and the Board. Firebase privacy information.
- Google AdMob, for ads. Google privacy policy.
When the phone is online, the app starts Firebase and the ads SDK so those features can run. Learning still opens if they do not start. Their servers may be outside the country where the phone is used.
Changes
If this policy changes, we will update the date at the top of this page. The page at this address is the current version.
Contact
Bahadurtech
Email: support@bahadurtech.com
Delete data: delete.html
Support page: support.html