BJJ Diary

BJJ Diary

Privacy Policy

日本語 · English · Português

1. Introduction

BJJ Diary (the "App") is an app for keeping Brazilian Jiu-Jitsu training records. This policy explains how information is handled in the App.

2. Personal Information

The App has no account registration or login. We do not collect personal information such as your name or email address.

3. What You Record

Everything you create in the App is stored only on your device. It is never sent to our servers, and we cannot see it.

The following is stored on your device:

4. Purchasing the Plus Plan

Purchases and payments for the Plus plan are handled by Apple. We never receive your payment details, such as credit card information.

To check and manage your purchase status, we use a service provided by RevenueCat, Inc. An anonymous identifier created by the App and your purchase and renewal status are sent to RevenueCat. Your journal entries, notes, and other records are never sent.

5. Analytics & Advertising

The App does not use analytics tools or advertising services, and does not track you across other companies' apps or websites.

6. Deleting Your Data

You can delete journal entries, notes, and other items individually within the App.

Deleting the App removes everything stored on your device.

7. Security

Your records are protected by iOS Data Protection.

8. Children's Privacy

The App is not directed at children under 13. We do not knowingly collect personal information from children under 13.

9. Changes to This Policy

If we change this policy, we will let you know through an app update.

10. Contact

Northfield Studio
[email protected]

Last updated: October 12, 2026