Privacy Policy

Who is responsible

Tred is developed by Paul van Roosendaal, an independent developer in the Netherlands, who is the controller for the data described here. For questions or requests about your data, email tred@krafft.nl.

Health data from Apple Health

With your permission, Tred reads your running workouts from Apple Health: their date and time, duration, distance and the energy burned. Tred uses them to count the distance per shoe, to show your progress on your goals, your statistics and your personal bests.

Tred never writes to Apple Health. Your health data is processed on your device, is not stored in iCloud and is never sent to the developer or to third parties, and it is never used for advertising, marketing or data mining.

You can change or withdraw access at any time in the Settings app under Health → Data Access & Devices → Tred.

Data you add in Tred

Tred stores the data you add yourself:

• your shoes: name, start date and maximum distance;
• your goals: period and target;
• per run: the shoe you ran in, your score and your note.

To link this to the right run, Tred also stores the run's identifier with it. The run's date, distance and other details are not stored with it: Tred reads them from Apple Health on your device.

This data is stored on your device and synced through your private iCloud database (Apple CloudKit), so it is available on your other devices. Only you have access to it; the developer cannot see it. Apple's privacy policy applies to iCloud.

Anonymous usage statistics

To see which parts of the app are used and what can be improved, Tred sends anonymous usage statistics to TelemetryDeck (TelemetryDeck GmbH, Germany). These contain:

• which features are used, such as opening a screen, completing the introduction, adding a shoe, saving a goal (with its period), changing a run filter, opening a personal best (with its distance, such as 10K), and editing a run (only whether a shoe, score or note is filled in, never what);
• technical details such as the app version, iOS version, device model, language, region and time zone, and accessibility and display settings;
• how often and how long the app is used (sessions);
• an anonymous identifier, which is hashed on your device before it is sent, so it can be used to count users but not to identify you.

Usage statistics never contain your runs or other health data, nor anything you typed, such as shoe names or notes. TelemetryDeck does not store IP addresses and does not use the data for advertising or to track you across apps. It processes the data on behalf of the developer and offers the same protection as described in this policy.

The legal basis is the developer's legitimate interest in improving the app. You can turn the statistics off at any time in Tred under Profile → Privacy → Share anonymous usage statistics. This setting applies per device.

Retention and deletion

• Data in Tred: delete a shoe or goal in the app, or delete all of Tred's data from iCloud in the Settings app under [your name] → iCloud → Storage → Tred. Deleting the app removes the data from the device.
• Health data stays in Apple Health and is managed there.
• Usage statistics cannot be linked to you, so they cannot be looked up or deleted per person. Turning them off stops any further sending.

Your rights

Under the GDPR you have the right to access, correct and delete your personal data, to restrict or object to its processing, and to data portability. Since almost all data stays on your device and in your own iCloud account, you can exercise most of these rights directly in the app or in the Settings app. For anything else, email tred@krafft.nl. You can also file a complaint with the Dutch Data Protection Authority (Autoriteit Persoonsgegevens).

Changes

When Tred starts handling data differently, this policy will be updated. The date at the top shows when it last changed.