Privacy Policy

MatNotes BJJ (“the app”) is a training notebook for Brazilian Jiu-Jitsu and grappling. It is provided by Remstalist Studios e.U. (Austria), the controller of your data. This policy explains what the app stores and why.

What we store

• Account: your email address and password. The password is stored only in hashed form; we cannot read it. If you use Sign in with Apple, we get no password, only the email address Apple gives us, which can be a private relay address if you choose “Hide My Email”.
• Your content: what you enter in the app: techniques, notes, tags, positions, study notebooks, class plans, habits and their check-ins.
• Photos and videos you choose to upload. The app only sees the items you pick. They are compressed on your phone and stored in your private cloud storage.
• Technical data: our hosting providers keep short-lived server logs (such as IP address and time of a request) to run and protect the service.

What we don't do

• No advertising, no analytics or tracking SDKs, no tracking across apps or websites.
• We don't sell or share your data with anyone for their own purposes.
• Your content is private to your account. Nobody else can see it unless you share it yourself.

Why we use it

To provide the app: signing you in, storing your notes and media, and syncing them across your devices (legal basis: performance of a contract, Art. 6(1)(b) GDPR). We email you only for account purposes, such as confirming your address.

We also look at statistics built from this data, such as the number of accounts, active users, uploads and storage used, to run and improve the app and keep its costs under control. These are counts and totals; we don't look at what your notes or techniques say (legal basis: our legitimate interest in a working, affordable service, Art. 6(1)(f) GDPR). Nothing is shared with analytics or advertising companies.

Photos permission

Picking media needs no permission. If you turn on “Remove originals from Photos”, the app asks for Photos access, and only to delete the originals you uploaded. iOS asks you to confirm each deletion.

Sharing

If you share a class plan, anyone with that link can view the plan's structure (segments, times, technique names), but never your photos or videos. Turning sharing off disables the link immediately.

Where your data is stored

Your data is stored in the European Union:

• Account and content (email, notes, techniques, notebooks, class plans, habits): in a Supabase database in Frankfurt, Germany.
• Photos and videos: in Cloudflare R2 storage under Cloudflare's EU jurisdiction, which keeps the files in the EU.
• Account emails are sent by Brevo (France).

This website is delivered by Cloudflare's global network. It doesn't store any personal data, only short-lived technical logs (see below). Supabase and Cloudflare are US companies. Where they may access data from outside the EU (for example for support or security), this is covered by the safeguards the GDPR requires, such as Standard Contractual Clauses and the EU–US Data Privacy Framework.

When you visit this website

This website uses no cookies, no analytics and no tracking. To deliver the pages and protect them against abuse, our hosting provider Cloudflare briefly processes technical data of each request (such as IP address, time, requested page and browser type). We don't use this data to identify you or build profiles (legal basis: our legitimate interest in a secure, working website, Art. 6(1)(f) GDPR). Cloudflare keeps such logs only for a short time.

How long we keep it

As long as you have an account. Items you delete go to the Trash and are removed permanently after 48 hours. You can delete your account in the app (Account → Delete Account). This permanently erases your account, all your content and all your uploaded media.

Your rights

You can access, correct, export or delete your data, and you can object to or restrict its processing. Contact us at hello@matnotes.eu. You also have the right to lodge a complaint with a supervisory authority. In Austria, that is the Datenschutzbehörde (dsb.gv.at).

Children

The app is not directed at children under 16.

Changes

If this policy changes, we'll update this page and its effective date.

Contact

Remstalist Studios e.U., Wehlistraße 131-143/5/10, 1020 Wien, Austria · hello@matnotes.eu · Impressum