Last updated: October 20, 2026
We keep things simple: your practice data stays on your device and we never sell your information.
🔒 Short version: PianoFlow needs no account, shows no ads and never sells your data. Your lesson progress stays on your device. Purchases are handled by Apple or Google. On iOS, the app also sends anonymous usage events to Google Firebase Analytics.
Who we are and which app this covers. This Privacy Policy is issued by ZENBYTE DİJİTAL TEKNOLOJİLER LİMİTED ŞİRKETİ (also written "Zenbyte Dijital Teknolojiler Limited Sirketi", trading as Zenbyte; "we", "us", "our"), the developer, publisher and data controller of the app. It applies to the mobile app known internally as PianoFlow and published as:
com.zenbyte.learnpiano, developer account Zenbyte Dijital Teknolojiler Limited ŞirketiContact: support@pianoflow.app or info@zenbyte.app. Website: www.zenbyte.app.
The app ("PianoFlow" or "Learn Piano") is available for iPhone/iPad (iOS) and Android. Here is exactly what data the app uses and where it lives:
| Data | What it is | Where stored | Shared? |
|---|---|---|---|
| Lesson progress | Best scores, star ratings, accuracy, number of attempts, practice time, last played time | On your device | Never |
| Streak & practice history | Days you practised, used to calculate your streak and streak freezes | On your device | Never |
| App settings | Your skill level, goals, daily practice goal, reminder choice, sound and playback preferences | On your device | Never |
| Usage events (iOS) | Events such as "lesson_started", "lesson_completed" or "paywall_viewed", with details like song ID, score, chosen goals or plan. Firebase also records an app-instance ID, device model, OS version and approximate country. | Google Firebase Analytics | Google, as our analytics provider |
| Purchases | Which plan you bought and whether it is active, used to unlock Premium | Apple App Store / Google Play | Apple or Google only |
The Android version does not currently send usage events to Firebase or any other analytics service.
We do not collect your name, email address, phone number, precise location, contacts, photos, camera or microphone, and we do not use any advertising identifier. No account is ever required. If you email us, we receive your email address and message so we can reply.
The data described above is used only to:
We never use your data for advertising or profiling, and we never sell it.
Lesson progress and streak data are stored in a local database inside the app's private storage, protected by your device's own security. We do not run servers that store your progress.
Your device may include this app data in its own backups: iCloud Backup on iOS, or Android's backup to your Google account. Those backups are governed by Apple's and Google's privacy policies.
Usage events sent to Firebase are encrypted in transit.
📱 If you delete the app, all data stored by it on your device (progress, streaks, settings) is deleted.
PianoFlow uses these third-party services. Each link leads to their privacy policy:
The app may also check our content server for new songs; that request contains no personal data, although, as with any web request, the server can see your IP address.
No advertising SDKs, tracking pixels or social login providers are included in the app.
Purchases are processed entirely by Apple (App Store) or Google (Google Play). We never see or store your payment details.
Premium is available as:
Subscriptions renew automatically unless cancelled before the end of the current period. Manage or cancel them at any time:
Refunds are handled by the store you bought from: Apple at reportaproblem.apple.com, or Google Play through your order history.
PianoFlow is not directed at children under 13, and we do not knowingly collect personal information from children under 13 (or under 16 in the European Economic Area).
If you believe a child has provided personal information, please contact us at info@zenbyte.app and we will delete it.
Depending on where you live, you may have rights over your data:
🇪🇺 GDPR / EU residents: Our legal basis for processing usage events is our legitimate interest in improving the app. You have the right to lodge a complaint with your local data protection authority.
🇺🇸 California (CCPA): PianoFlow does not sell or share personal information for cross-context behavioural advertising.
Data on your device (progress, streaks, settings) is kept until you delete the app.
Usage events in Firebase Analytics are kept for the retention period set in our Firebase project, after which Google deletes them automatically.
Purchase records are kept by Apple or Google under their own policies.
Support emails are kept only as long as needed to help you.
We may update this Privacy Policy from time to time. When we make material changes, we will update the "Last updated" date at the top of this page and, where appropriate, tell you in the app.
If you have questions, requests or concerns about this Privacy Policy, contact us:
📧 Email: info@zenbyte.app or support@pianoflow.app
We aim to respond within 5 business days.
In the app, tap Profile → Contact support.
These Terms are between you and ZENBYTE DİJİTAL TEKNOLOJİLER LİMİTED ŞİRKETİ ("Zenbyte", "we"). By downloading, installing, or using PianoFlow, published as "Learn Piano: Easy Song Lessons" on Google Play (com.zenbyte.learnpiano) and "Learn Piano: Song Game" on the App Store ("the App"), you agree to be bound by these Terms of Use ("Terms"). If you do not agree, please do not use the App.
These Terms apply to all users of the App, including free users and premium subscribers.
Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to download and use PianoFlow on iOS and Android devices that you own or control, solely for your personal, non-commercial purposes.
This license does not include the right to:
PianoFlow offers optional Premium purchases (monthly or yearly subscriptions, or one-time lifetime access) that unlock additional songs, features and modes. Purchases are handled by Apple's App Store or Google Play and are subject to their terms (Apple's Media Services Terms and Conditions, or the Google Play Terms of Service).
Free trial: Where offered, free trials automatically convert to a paid subscription at the end of the trial period unless cancelled beforehand.
Auto-renewal: Subscriptions automatically renew at the end of each billing period. Your Apple ID or Google Play account will be charged unless you cancel before the renewal date (on the App Store, at least 24 hours before).
Cancellation: Cancel anytime in iOS Settings → your name → Subscriptions, or in the Google Play Store → Payments & subscriptions → Subscriptions. Cancellation takes effect at the end of the current billing period — you retain premium access for the remainder of the period.
Refunds: Refunds are processed by the store you bought from: Apple at reportaproblem.apple.com, or Google Play through your order history.
Price changes: We reserve the right to adjust pricing. Existing subscribers will receive advance notice of any price changes through the App Store or Google Play.
You agree not to use the App in any way that:
All content in PianoFlow — including the app design, graphics, animations, sound engine, note arrangements, branding, and copy — is the property of PianoFlow and its licensors and is protected by copyright, trademark, and other intellectual property laws.
Songs in the App are original compositions, arrangements of public-domain works, or works used under license.
Nothing in these Terms transfers ownership of any intellectual property to you.
THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
We do not warrant that the App will be uninterrupted, error-free, or free of viruses or other harmful components. We do not warrant that any content in the App is accurate, complete, or up to date.
TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, PIANOFLOW AND ITS AFFILIATES SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING LOSS OF PROFITS, DATA, OR GOODWILL, ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF — OR INABILITY TO USE — THE APP.
In no event shall our total liability to you exceed the amount you paid for a subscription in the twelve months preceding the claim, or $10 USD if you are a free user.
We reserve the right to suspend or terminate your access to the App at our sole discretion, without notice, if we believe you have violated these Terms.
You may stop using the App at any time by deleting it from your device.
Upon termination, the license granted under Section 2 ends immediately. Sections 5, 6, 7, and 9 survive termination.
These Terms are governed by and construed in accordance with the laws of the State of California, United States, without regard to its conflict-of-law provisions.
Any dispute arising from these Terms shall be subject to the exclusive jurisdiction of the courts located in San Francisco County, California, except where prohibited by applicable law.
For any questions about these Terms of Use, contact us at:
ZENBYTE DİJİTAL TEKNOLOJİLER LİMİTED ŞİRKETİ
📧 support@pianoflow.app · info@zenbyte.app