Privacy Policy of Growney Mind

2026-11-12

This policy explains how Growney Mind, the iOS and Android app, handles personal data. Growney Mind is a daily game for children: every day a short path of activities in reading, maths, logic, seeing, memory and attention, and free play after it. If anything is unclear, write to us at support@growney.app.

The short version

A child can use Growney Mind without any account. Then the child's name, age, levels and everything they did stay on the device, and the app sends nothing about the child.
The app has no ads, no analytics, no tracking, no chats and nothing a child could publish. It doesn't use the camera, the microphone or the location.
A grown-up can sign in with a Growney account and pick the child. Then grown-ups see in Growney Family how many minutes a day the child played, and the family's daily limit applies.
The app has a subscription that a grown-up buys behind the parental gate. To check it, the app talks to RevenueCat, which gets a random ID, never a name.
Links that leave the app, signing in, purchases and the settings for grown-ups are behind a parental gate.

1. Who is responsible for your data

The controller of your personal data is Yevhenii Dryha, ul. Augustyna Szamarzewskiego 21 lok. 2, 60-514 Poznań, Poland, NIP 5273007452, REGON 522367200 ("we", "us"). Contact: support@growney.app. We have not appointed a data protection officer.

2. What stays on the device

Growney Mind keeps on the device, in the app's own storage:

the children a grown-up added: a name or nickname, the age picked for the first test and the reading language;
each child's level in every skill, the days played and what was done in each activity (right first time, with a hint, or shown), the words met, the pieces of the picture map, the mood the child picked at the end of a day and the notes a grown-up wrote;
the settings: the app's language, the length of a day, whether the voice is on;
the date of the first start, for the free week.

All of this is deleted with the app. Without an account it never leaves the device.

3. With a Growney account

A grown-up can sign in with a Growney account (email and password, Sign in with Apple or Sign in with Google), create a family if there is none and add a child, or pick a child already in the family. Adding a child, the grown-up enters the child's name or nickname and the year of birth. The account, the family and the child's profile are the same as in the Growney app and are described in the Growney privacy policy: chore.growney.app/privacy.

The child's levels, days and map stay on the device even then: Growney Mind doesn't send them to us.

So that grown-ups can see in Growney Family how long the child played and set a daily limit, we count the minutes played: the date, the number of seconds that day on this device and the app's name. These records are deleted after 40 days. When today's time is up, the child can ask for more, and grown-ups see the request in Growney Family. Before a child with a limit signs out, the app asks for the grown-ups' PIN and checks it on our server. To count a day by a clock a child can't move forward, the app then asks growney.app for the current time; that request carries nothing about the child, and our hosting sees the device's IP address as for any web page.

The device the child plays on is linked like a child's phone in Growney: we keep an identifier the app creates for that device (no email or password), the name "Growney Mind", the type of device and the time it was linked. The device appears among the child's devices in Growney Family, where a grown-up can unlink it. A grown-up can also show a one-time 6-digit code to link a child's own device; the code expires after 15 minutes.

4. The subscription

Everything in the app is open for the first 7 days, without a card. After that a subscription opens the daily path and free play; the map, the diary and the grown-ups' cabinet stay open. A grown-up subscribes behind the parental gate. The App Store and Google Play sell the subscription and handle payments as independent controllers, under their own privacy policies. We never receive card details.

To check whether the subscription is active, the app contacts RevenueCat, only after the free week or once a grown-up opens the subscription screen. RevenueCat receives a random user ID and the purchase details from the store (product, dates, status) and, when the child has signed in with a Growney account, the family's ID, so one subscription works on all the family's devices. The app sets no other attributes and sends no device identifiers for advertising.

5. What we don't do

We don't show ads, use advertising SDKs or read the advertising identifier.
The app has no analytics and no crash reporting from other companies.
We don't track anyone across other companies' apps and websites.
We don't ask for a child's email, phone number, location, contacts, photos or voice. The app doesn't use the camera or the microphone.
We don't sell personal data or share it for marketing.

6. Legal bases

We process personal data under the EU General Data Protection Regulation (GDPR) for the contract with the grown-up who signs in (Art. 6(1)(b)): counting play time for grown-ups, the daily limit and linking devices; and for our legitimate interests (Art. 6(1)(f)): keeping the service secure, preventing abuse, fixing errors and answering support requests. By adding a child or choosing one, a grown-up confirms that they are the child's parent or legal guardian, or have their permission.

7. Who we share data with

The child's family: play time is stored with the family, and grown-ups in the family manage the child's profile and devices in Growney and Growney Family.
Google Cloud and Firebase (Google Ireland Limited): sign-in, database and server functions. Database and server functions are in the EU (Belgium); sign-in may also be processed in other countries, including the United States.
Cloudflare, Inc.: hosting of growney.app, which tells a signed-in child's app the time.
Google Workspace (Google Cloud EMEA Limited): our support email.
RevenueCat, Inc. (United States): checking subscription status with the App Store and Google Play. Receives a random user ID, the purchase details from the store and, when the child has signed in, the family's ID.
Apple and Google: downloading the app and paying for the subscription and, if a grown-up chooses Sign in with Apple or Sign in with Google, the sign-in too, under their own privacy policies.
Authorities: only when the law requires it.

8. Transfers outside the European Economic Area

When a provider processes data outside the EEA, we rely on a European Commission adequacy decision, such as the EU-US Data Privacy Framework for certified companies, or on the Commission's Standard Contractual Clauses.

9. How long we keep data

Everything on the device: until the app is deleted.
Minutes played: 40 days.
A linked device: until it is unlinked in Growney, Growney Family or Growney Mind, or the child's profile is deleted.
Device codes: 15 minutes.
Subscription data at RevenueCat: while the subscription exists and up to 2 years after it ends, for accounting and tax.
Database backups: 7 days. Server and hosting logs: up to 30 days. Support emails: up to 2 years after the question is resolved.

10. Your rights

You have the right to access your data and get a copy, to correct it, to have it deleted, to restrict processing, to data portability and to object to processing based on our legitimate interests. Parents exercise these rights on behalf of their children. A grown-up can delete the account and all the family's data in Growney Mind (Me, then Growney account, behind the parental gate), in Growney Family or in the Growney app; for anything else write to support@growney.app. We reply within one month.

You can also complain to a data protection authority. In Poland that is the President of the Personal Data Protection Office (Prezes UODO), ul. Stawki 2, 00-193 Warszawa, uodo.gov.pl.

11. Security

Data is encrypted in transit and at rest. Access rules let a child's device write only that child's play time, and it loses access as soon as it is unlinked.

12. Changes and contact

When we change this policy, we update the date at the top and tell grown-ups about significant changes before they take effect. Yevhenii Dryha, ul. Augustyna Szamarzewskiego 21 lok. 2, 60-514 Poznań, Poland, support@growney.app.