Effective date: May 10, 2026 Developer: Dmitri Jurkin Contact: dmitri.jurkin@gmail.com
ReactFlash – Tennis Reaction Trainer ("the app") is developed by Dmitri Jurkin. This Privacy Policy explains what information we collect, how we use it, and your rights regarding your data.
Information you provide:
Email address if you create an account
Payment information (processed securely by Google Play — we never see your card details)
Information collected automatically:
App usage data (training sessions, drills completed)
Device information (device type, operating system version)
Advertising data (if you are a free user, Google AdMob collects data to show relevant ads)
To provide and improve the app
To process your subscription via Google Play Billing
To show advertisements to free users via Google AdMob
To track your training progress locally on your device
To respond to your support requests
Training progress data is stored locally on your device only
We do not store your personal training data on external servers
Free version of ReactFlash displays advertisements provided by Google AdMob. Google may use your device data to show personalised ads. You can opt out of personalised ads in your Google account settings. Ads are never shown during active training sessions.
Pro subscriptions are processed entirely by Google Play Billing. We do not collect or store your payment information. Subscription management and cancellation is done through your Google Play account.
ReactFlash is not directed at children under 13 years of age. We do not knowingly collect personal information from children under 13.
The app uses these third party services:
Google Play Billing (subscription payments)
Google AdMob (advertisements for free users)
Google Analytics (app usage analytics)
You have the right to:
Access your personal data
Request deletion of your data
Opt out of personalised advertising
Cancel your subscription at any time
We may update this Privacy Policy from time to time. Changes will be posted within the app and on this page with an updated effective date.
If you have any questions about this Privacy Policy please contact: Dmitri Jurkin dmitri.jurkin@gmail.com