DataTennis Privacy Policy
Last Updated: November 1, 2026
DataTennis ("the App") respects user privacy and handles collected information appropriately.
Advertising
The App may display advertisements promoting our own apps and services to free users.
Currently, the App promotes our table tennis score tracking app, "DataTT," and other apps developed by us.
All advertising content and destination links are managed by the developer. The App does not use third-party advertising networks such as Google AdMob.
We do not display personalized advertisements based on user behavior or engage in tracking through third-party advertising networks.
We may use Firebase Analytics to measure ad impressions, clicks, and interactions with ad removal options. This information is used to evaluate advertising performance and improve the App.
This information is not used for third-party targeted advertising.
Usage Analytics
The App uses Firebase, provided by Google LLC, to improve app quality, investigate issues, and develop new features.
Firebase may collect the following information:
- App launches, screen views, and feature usage
- In-app interactions and events
- Impressions and clicks related to our own advertisements
- App instance identifiers, device information, and operating system information
- Crash reports and diagnostic data
This information is used to analyze app usage, improve features, investigate issues, and evaluate the effectiveness of our own advertisements.
Information collected through Firebase is handled in accordance with Google LLC's Privacy Policy.
Google Privacy Policy
https://policies.google.com/privacy?hl=en
Firebase Privacy and Security
https://firebase.google.com/support/privacy
Cloud Backup Data
The App provides a feature that allows users to store backup copies of their recorded match data in the cloud.
Backup data is used to provide App features such as saving and restoring match records.
Backup data may also be processed in a form that does not identify individual users and used to generate aggregated statistical information.
Heart Rate Data (Health Data)
The App may collect heart rate data measured by a Wear OS device only when the user explicitly grants permission.
The collected data is used to visualize physical activity during tennis matches.
Data Collected
- Heart rate (bpm) measured by the user's Wear OS device
Purpose of Use
- To visualize physical activity during tennis matches
- To provide match review features
- To display heart rate information for points, games, and sets
Heart rate data is not used for medical purposes.
Data Transmission
- Heart rate data may be transferred from the user's Wear OS device to the paired smartphone application.
- Heart rate data is not transmitted to external servers, third-party companies, or advertising networks.
Data Storage
- Collected heart rate data is stored only on the user's smartphone (local storage).
- Stored data is used only as necessary to provide the App's features.
Data Deletion
- When users delete match data, the associated heart rate data is also deleted from the device.
- Uninstalling the App removes locally stored heart rate data from the device.
User Control
- Users can enable or disable heart rate data collection and usage through the App's settings.
- When disabled, heart rate data is not collected, stored, or transferred from the Wear OS device.
Changes to This Privacy Policy
This Privacy Policy may be updated to reflect changes to the App's features, applicable laws, or other requirements.
Any updates will be published on this page.