Cookie Policy
Version 1.1 — in force as of August 2026
This policy has been drawn up in English. Translations are provided for convenience only; in the event of any inconsistency, the English version prevails.
- Service: MathMax — online math practice game
- Operated by: Que?! Communicatie (Debby Grooteman)
- Registered address: Gran Via de les Corts Catalanes, 672, 08010 Barcelona, Spain
- VAT / NIF: Y1701744B
- Email: privacy@getmathmax.com
- Website: https://www.getmathmax.com
1. About this cookie policy
This cookie policy explains how MathMax ("we", "us"), operated by Que?! Communicatie, uses cookies and similar technologies on https://www.getmathmax.com and in the MathMax application. It explains what these technologies are, why we use them, and how you can manage them.
A cookie is a small text file that a website stores on your computer, phone or tablet. Besides cookies, we use similar technologies such as local storage, in which information is saved by your browser on your device (for example to keep your game progress). In this policy, "cookies" also refers to these similar technologies.
2. Why we use cookies
We use cookies to make MathMax work properly and securely, to remember your settings (such as language and theme) and your game progress on your device, to keep you signed in to a paid account, to process subscription payments, and to protect our sign-up and password forms against automated abuse.
3. Your consent
- Strictly necessary cookies are required for MathMax to function and are placed without consent.
- MathMax currently uses no analytics, advertising or other non-essential cookies.
- If we ever introduce non-essential cookies (such as analytics), we will ask for your prior consent through a cookie banner before they are placed, in line with Spanish law (LSSI) and the GDPR, and you will be able to refuse or withdraw your consent as easily as you can give it.
4. Cookies we use
We use the cookies and similar technologies set out in the table below.
| Cookie / technology | Provider | Purpose | Category | Duration |
|---|---|---|---|---|
| access_token / refresh_token | MathMax | Keep you signed in to your paid account. | Strictly necessary (for paid features) | 15 minutes / 7 days |
| NEXT_LOCALE | MathMax | Remembers your language choice. | Functional | Up to 1 year |
| theme | MathMax | Remembers your light/dark theme choice. | Functional | 1 year |
| oauth_in_progress / oauth_next | MathMax | Secure the sign-in flow when you sign in with an external provider (for example Google). | Strictly necessary | 10 minutes |
| pending_plan / pending_plan_context | MathMax | Remember the plan you selected while you create your account and verify your email. | Strictly necessary | 1 hour |
| Payment cookies | Stripe | Process subscription payments securely and help prevent payment fraud during checkout. | Necessary for payment (third party) | Per Stripe's cookie policy |
| reCAPTCHA | Protects the sign-up, password-reset and email-verification forms against bots and automated abuse. It is not loaded on the children's sign-in page, which loads nothing from any third party. | Strictly necessary (security, third party) | Per Google's cookie policy | |
| Game progress and settings (local storage) | MathMax — stored on your device | Saves your game progress and settings when you play without an account, and remembers that you dismissed the cookie notice. | Functional | Until you clear it |
Note: exact cookie names and durations can vary per provider and over time. We verify the live list periodically and keep this table up to date.
5. Third-party cookies
Some cookies are placed by third parties that provide services to us: our payment provider (Stripe), which processes subscription payments during checkout, and Google (reCAPTCHA), which protects our sign-up, password-reset and email-verification forms — and which is loaded only on those pages, never on the children's sign-in page. We do not control these third-party cookies. You can find more information in the privacy and cookie statements of the providers concerned.
We do not use advertising or profiling cookies, and we do not sell your data to advertisers.
6. Managing, blocking and deleting cookies
- You can block or delete cookies through your browser settings, and set your browser to warn you when a cookie is placed.
- Clearing cookies or local storage may affect how MathMax works — for example, you may be signed out or lose game progress saved on your device.
7. Your privacy rights
Where cookies process personal data, you have the right to access, rectify, restrict and erase that data, to object to processing, and to data portability. You can exercise these rights by emailing privacy@getmathmax.com. To prevent misuse, we may ask you to confirm your identity. How we handle personal data is described in full in our Privacy Policy.
8. Changes to this cookie policy
We may update this cookie policy from time to time, for example when we change the website or the tools we use, or when the rules on cookies change. The latest version is always available on this page, so please review it regularly.
9. Contact
If you have any questions or comments about this cookie policy, please contact us at privacy@getmathmax.com.
Drawn up in July 2026 — Version 1.1, August 2026