Privacy Policy

Last updated: March 2, 2026

What Matchbook Is

Matchbook is a companion application for League of Legends that helps players improve through structured journaling, game recording, and performance tracking. Matchbook is currently available on macOS with plans to expand to additional platforms.

Matchbook isn't endorsed by Riot Games and doesn't reflect the views or opinions of Riot Games or anyone officially involved in producing or managing Riot Games properties. League of Legends and Riot Games are trademarks or registered trademarks of Riot Games, Inc.

What Data We Collect

Data You Provide Directly

• Display name and Riot Games account information (game name, tagline, region)
• Journal entries (session goals, reflections, mood, energy level, per-game notes)
• Champion notes and matchup guides
• Learning objectives
• Gameplay flag annotations and recording notes

Data Fetched from the Riot Games API on Your Behalf

When you link your Riot Games account, Matchbook requests the following data from the Riot Games API:

• Riot account identifier (PUUID)
• Match history and match details (champions played, game statistics, outcomes, items, runes)
• Match timeline events (kills, deaths, objectives, timestamps)
• Ranked tier, division, and LP

This data is fetched solely to provide Matchbook's journaling and analysis features. Matchbook only reads data from the Riot API — it never modifies your Riot account or game data.

Data Generated on Your Device

• Screen recordings of your League of Legends gameplay
• Video clips extracted from recordings
• Statistical snapshots and trends calculated from your match history

Where Your Data Is Stored

All data is stored locally on your device. Matchbook does not operate cloud servers or sync your data to remote storage.

• Structured data (profiles, matches, journals, settings) is stored in a local database on your device.
• Video recordings and clips are stored as files in your local application data directory.
• API keys for Riot Games and AI providers are stored in your operating system's secure credential storage (macOS Keychain or platform equivalent), encrypted by the operating system.

If Matchbook introduces optional cloud sync or cross-device features in the future, this will be clearly communicated and require your explicit opt-in consent.

Third-Party Services

Riot Games API

Matchbook connects to the Riot Games API to fetch your match history and game statistics. This connection uses your Riot account information and is subject to Riot Games' Privacy Notice and Developer Policies.

• Match data is used solely to provide Matchbook's features to you
• Matchbook does not redistribute, resell, or publicly expose Riot API data
• Matchbook does not store data beyond what is necessary for the app's functionality
• All Riot Games trademarks and game data are the property of Riot Games, Inc.

No Other Third-Party Services

Matchbook does not use analytics services, crash reporting tools, advertising networks, tracking pixels, or any other third-party data collection. No data is sent to any AI service.

Data Retention and Deletion

Since all data is stored locally on your device, you have full control:

• Delete individual matches, sessions, recordings, journal entries, champion notes, or any other data at any time within the app.
• Matchbook's auto-cleanup feature can automatically remove old recordings after a configurable number of days.
• Uninstalling Matchbook removes the application. Your data files can be removed by deleting the Matchbook folder in your application data directory.

Data Sharing

Matchbook does not sell, rent, or share your personal data with anyone. The only outbound data transfer is:

• Riot Games API — Requests to fetch your match data (using your account information).

This transfer is initiated by you and occurs directly from your device.

Children's Privacy

Matchbook is not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe a child under 13 has provided personal information through Matchbook, please contact us.

Changes to This Policy

We may update this privacy policy from time to time. Changes will be noted by updating the "Last updated" date. Significant changes will be communicated through the app or our website.

Contact

Email: contact@matchbook.gg