Privacy Policy
Plain-language summary first, full details below.
Last updated: 2026-09-14
The short version
- Wembuno does not ask for, collect or store personal information on our servers.
- There are no accounts, no analytics, no tracking and no social features.
- Game progress is saved only in your browser, on your device, and you can delete it at any time.
- Wembuno does not currently show any advertising.
Who we are
Wembuno (“we”, “us”) is operated by the Wembuno team. You can contact us at info@wembuno.com.
Who Wembuno is for
Wembuno is an educational game directed to children aged 6 to 12, and to the parents and teachers who support them. We designed it so that it does not need personal information from anyone.
Information we do not collect
We do not request or collect names, email addresses, phone numbers, photos, voice recordings, precise location, contact lists, school details or any other information that identifies a child or an adult. Wembuno has no registration, no chat, no user profiles and no way for children to share information publicly.
Information stored on your device
To make the game work, Wembuno saves information in your browser. This data stays on your device; it is not sent to us or to anyone else.
| What is stored | Why | How long |
|---|---|---|
wembuno.save.v1 (local storage): game progress — results for each multiplication fact, level, coins, stars, achievements, items, settings and a daily activity summary for the last 120 days | To save progress, adapt questions to the facts your child finds hardest, and show the progress report | Until you reset progress or clear this site’s data |
wembuno.lang (local storage): preferred language | To open Wembuno in the language you chose | Until you clear this site’s data |
| Offline cache (service worker): copies of Wembuno’s own pages, styles and scripts | To load quickly and keep working with a poor connection | Replaced automatically when Wembuno updates |
This storage is strictly necessary to provide the game you chose to use, and it contains no name or contact details. The adaptive practice happens entirely on the device and is used only to choose the next question.
Hosting and server logs
Like any website, the servers that deliver Wembuno receive technical information needed to send pages to your browser, such as your IP address, browser type and the page requested. Our hosting provider may keep these logs for a short period for security and to keep the service running. We do not use them to identify, profile or contact anyone. Where the GDPR applies, the legal basis is our legitimate interest in operating a secure website (Article 6(1)(f)).
Cookies
Wembuno does not use cookies. Read our cookie policy.
Advertising
Wembuno does not currently show advertising. If we decide to show ads in the future, they will never appear inside the game, and we will update this policy before any ad is shown.
Children’s privacy
We collect as little as possible — in practice, no personal information at all.
In the United States, the Children’s Online Privacy Protection Act (COPPA) requires verifiable parental consent before personal information is collected from children under 13. Wembuno does not collect personal information from children.
In the European Union and the United Kingdom, we follow the GDPR and UK GDPR and apply the standards of the UK Age Appropriate Design Code: high privacy by default, no profiling for marketing, no nudge techniques, no geolocation and no data sharing.
Your rights and choices
- See the data: the Parents page shows what is stored about play on this device.
- Export it: Settings → Grown-up zone → Save progress to a file.
- Delete it: Settings → Grown-up zone → Reset all progress, or clear this site’s data in your browser settings.
Because we hold no personal data on our servers, we will usually not find any information about you, but you are always welcome to contact us. You also have the right to complain to a data protection authority, such as the Information Commissioner’s Office (ICO) in the UK or the supervisory authority where you live in the EU.
Security
Wembuno is designed to be served over HTTPS with a strict content security policy, and it loads no third-party scripts.
Changes to this policy
If we change how Wembuno handles information, we will update this page and the date above before the change takes effect.
Contact
Questions about privacy: info@wembuno.com.