Privacy Policy

At sagev (legally represented by Santiago Esteban Nieto Morales, “we”, “our”, “us”), we respect your privacy and are committed to protecting it. This Privacy Policy explains how Symphony Tuner (“the App”) handles information when you use our mobile application (Android and iOS) or web version.

1. Quick Summary (Privacy by Design)

• No accounts required: You do not need to create an account, log in, or provide your name, email address, or phone number to use the App.
• 100% on-device audio processing: The microphone is used solely to detect your instrument's pitch in real time. We never record, store, or transmit your audio to external servers.
• Local preferences only: Your tuning settings, favorite instruments, and recent history are stored strictly locally on your device.
• Advertising (free version): The free version uses Google AdMob configured to request non-personalized ads.
• In-app purchases: Payments for the lifetime Premium unlock are processed directly by Google Play or the Apple App Store; we never receive or store your payment card details.

2. Information We Process and How We Use It

2.1. Microphone Usage and Audio Data

The core purpose of Symphony Tuner is to tune musical instruments. To do this, the App requests permission to access your device's microphone (RECORD_AUDIO on Android,NSMicrophoneUsageDescription on iOS, and browser microphone access on Web).

• Real-time on-device processing: Audio captured from the microphone is analyzed instantaneously in your device's volatile memory (RAM) using local pitch-detection algorithms (YIN / MPM) and RMS decibel calculation.
• Zero recording and zero transmission: Audio buffers are discarded immediately after the pitch frequency is calculated. The App does not record audio files, does not save voice or sound samples, and does not transmit audio to our servers or any third party.
• Revoking permission: You can revoke microphone access at any time in your device or browser settings (please note that the tuner cannot detect notes without microphone access).

2.2. Data Stored Locally on Your Device

To remember your preferences without requiring a user account, the App stores the following data locally on your device (via local app storage / AsyncStorage):

• Tuner & display settings: Reference frequency (A4 from 415 Hz to 466 Hz), tuning tolerance, noise filter toggle, haptic feedback toggle, visual theme (light/dark/system/stage mode), and selected language.
• Instruments: Your list of favorite instruments and up to 6 recently used instruments.
• Premium license status: A locally signed license record verifying your one-time lifetime purchase (Simphony Studio Premium) so unlocked features work offline.
• Review prompt state: Local counters (cards opened, successful tunings, and last prompt timestamp) to ensure in-app review prompts remain non-intrusive.

This data remains strictly on your device and can be deleted at any time by clearing the App's data or uninstalling the App.

2.3. Data Automatically Collected by Third Parties (Advertising — Free Version)

If you use the free version of the App (without an active Premium license), we display banner ads and optional rewarded video ads (to unlock special instruments, alternate tunings, or A4 calibration for the current session) via Google AdMob (a service provided by Google LLC).

Although we configure our ad requests to ask for non-personalized ads (requestNonPersonalizedAdsOnly), the Google Mobile Ads SDK automatically collects and shares certain technical data with Google and its advertising partners to serve ads, cap ad frequency, provide aggregated reporting, and prevent fraud and abuse:

• IP address: Used to estimate general (coarse, city/country-level) location and for security/fraud prevention.
• Device identifiers: Such as the Android Advertising ID (AAID), Apple Identifier for Advertisers (IDFA, subject to system permissions), or SDK/app instance IDs.
• App & ad interactions: Information such as app launches, ad views, and taps.
• Diagnostic information: Crash logs and SDK performance metrics.

You can learn more about how Google uses data from apps that use its services at https://policies.google.com/technologies/partner-sites and review Google's Privacy Policy at https://policies.google.com/privacy.

Premium version note: Once you purchase Simphony Studio Premium, ads are disabled and no banner or rewarded video ads are shown.

2.4. In-App Purchases

The App offers a one-time lifetime purchase (Simphony Studio Premium) processed entirely through Google Play Billing (Android) or Apple StoreKit / App Store (iOS).

• No financial data collected by us: We never access, collect, or store your credit card number, bank account, or billing address.
• Purchase verification: The respective app store provides us only with a transaction token/receipt to verify your purchase and allow you to restore your license across reinstalls or devices.

Please review the privacy policies of Google Payments or Apple.

2.5. App Store Reviews and External Links

• Store reviews: The App may occasionally invite you to rate the app using the native Google Play In-App Review API or Apple StoreKit review prompt, or open the store listing. This interaction is governed by Google's or Apple's privacy policies.
• External links: Where native ads are unavailable (e.g., web or fallback environments), promotional cards may link to external https:// websites. Clicking such links takes you outside the App to third-party sites whose privacy practices we do not control.

2.6. Website Waitlist (Optional)

If you choose to join the launch waitlist on this website, we collect the email address you submit, the date of signup and basic technical information provided by our form processor (such as browser type). We use it only to announce the launch and important release news. We do not sell or rent it, and every email includes an unsubscribe link. Submissions are processed by a form provider (such as Formspree or Web3Forms) acting on our behalf; you can ask us to delete your address at any time.

3. App Permissions

Depending on your platform, the App uses only the permissions necessary for its features:

• Microphone (RECORD_AUDIO / NSMicrophoneUsageDescription): Real-time instrument pitch detection.
• Internet access (INTERNET): Loading ads in the free version and verifying/restoring purchases via Google Play / App Store.
• Billing (com.android.vending.BILLING): Processing the one-time Premium purchase on Google Play.
• Vibration (VIBRATE): Optional haptic feedback when a note is in tune.
• Audio settings & foreground media service (MODIFY_AUDIO_SETTINGS, FOREGROUND_SERVICE_MEDIA_PLAYBACK): Playing locally generated reference tones.
• Keep screen awake: Prevents the screen from dimming while tuning.

The App does not request access to precise GPS location, camera, contacts, calendar, SMS, or external file storage.

4. Legal Basis for Processing (EEA, UK, and Swiss Users — GDPR / UK GDPR)

If you are located in the European Economic Area (EEA), the United Kingdom, or Switzerland, minimal technical data is processed under the following legal bases:

• Performance of a contract: Local microphone processing and local settings storage are necessary to provide the tuner functionality and fulfill in-app purchases you request.
• Consent: Where required by applicable law for accessing device identifiers or local storage used by advertising partners (e.g., via consent dialogs or OS tracking settings).
• Legitimate interests: Fraud prevention, ad security, crash diagnostics, and maintaining the technical stability of the App.

5. Your Privacy Rights by Region

5.1. EEA / UK (GDPR)

You have the right to request access, correction, deletion, restriction, or objection regarding your personal data, and to withdraw consent at any time. Because we operate no backend servers or user accounts, we do not store personal data about you on our own systems. For data processed by Google AdMob, you may manage preferences via your device settings or Google's privacy controls.

5.2. California Residents (CCPA / CPRA)

We do not sell your personal information for monetary consideration. To the extent that integrating advertising SDKs such as Google AdMob could be considered “sharing” technical identifiers under California law, we configure ad requests for non-personalized ads. You may limit ad tracking at any time through your Android or iOS device privacy settings.

5.3. Other Jurisdictions (e.g., LGPD in Brazil, Law 1581 in Colombia, etc.)

We respect applicable data protection rights, including access, correction, and deletion. You may contact us at [email protected] with any privacy-related inquiry.

6. How to Manage or Opt Out of Ad Tracking

You can reset or restrict your device's advertising identifier at any time:

• Android: Settings > Google > Ads (or Privacy > Ads) > “Reset advertising ID” or “Delete advertising ID”.
• iOS: Settings > Privacy & Security > Tracking (disable “Allow Apps to Request to Track”) and Settings > Privacy & Security > Apple Advertising.
• In-app: Purchasing Simphony Studio Premium removes all ads from the App.

7. Children's Privacy

Symphony Tuner is a general-audience music utility and is not directed to children under the age of 13 (or the equivalent minimum age in your jurisdiction, such as 14–16 in certain EEA countries). We do not knowingly collect personal information from children. If you are a parent or guardian and believe a child has provided personal information directly to us, please contact us at [email protected] so we can promptly address it.

8. Data Security and Retention

• Security: Network communications by third-party SDKs (Google AdMob and app store billing) are encrypted in transit via HTTPS/TLS (cleartext traffic is disabled in the Android configuration). Local preferences remain in the App's private device storage.
• Retention: Local data remains on your device until you clear app data or uninstall the App. Technical data processed by Google AdMob is subject to Google's retention policies.

9. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in the App, third-party SDKs, or legal requirements. We will post the updated version on this page with a revised “Last Updated” date. We encourage you to review this page occasionally.

10. Contact Us

If you have any questions or requests regarding this Privacy Policy, please contact:

• Controller: Santiago Esteban Nieto Morales (brand: sagev)
• Email: [email protected]
• Location / Jurisdiction: Bogotá, Colombia