Privacy Policy – Tuny for iOS and macOS

Last updated: 2025-12-19

1. Overview

This Privacy Policy explains how Tuny for iOS and macOS (the “Application”) processes personal data (“Personal Data”) when you use the Application.

Some data processing is required to provide the core functionality of the Application.
Other processing is optional and takes place only if you explicitly consent within the Application.

This Privacy Policy is intended to be valid worldwide. Where local data protection laws apply (including the GDPR in the EU/EEA/UK and applicable US state privacy laws), additional rights may apply as described below.

2. Owner and Data Controller

Christian Hengst | Design & Code
Elsaßstraße 1
Atelier H/M/R
50677 Cologne, Germany
Email: support@tunytuner.com

3. Categories of Personal Data

Depending on your use of the Application and your settings, the following categories of data may be processed:

Usage Data (e.g. feature interactions, app events, approximate location such as country or city)
Device and technical data (e.g. device model, operating system, app version)
Crash and diagnostic data (technical error reports)
Purchase and subscription metadata
Audio input data from the device microphone (processed locally, not stored or transmitted)

4. Purposes of Processing

Personal Data is processed for the following purposes:

Providing and maintaining core app functionality (instrument tuning and pitch detection)
Analyzing audio input to determine pitch and tuning accuracy
Subscription and in-app purchase validation
App stability, security, and troubleshooting
Synchronization of user settings across devices
Beta testing (if TestFlight is used)
Analytics (only with your explicit consent)

5. Services Used by the Application

Required Services (necessary for the operation of the Application)

These services are essential to provide the Application and cannot be disabled.

Microphone Access (Audio Input)

The Application requires access to the device’s microphone to analyze audio signals and determine pitch for tuning purposes.

Audio data is processed in real time on the device
Audio is not recorded, stored, or transmitted
No audio data is shared with the Owner or third parties

Microphone access is used exclusively to provide the tuning functionality.

Apple In-App Purchases

All payments and subscriptions are processed exclusively by Apple.
The Application and its Owner do not have access to payment credentials such as credit card numbers or bank details.

Apple processes payment data as an independent data controller under its own privacy policy.

Adapty (subscriptions, purchases, receipt validation)

Adapty is used to manage subscriptions and in-app purchases, validate receipts, and determine access to paid features.

Adapty may process:

Device and app information (e.g. device model, operating system, app version)
App or device identifiers (excluding IP addresses)
Purchase and subscription metadata (e.g. product identifiers, purchase status, renewal status)
App interaction events related to paywalls and purchase flows

IP address collection is disabled.
No payment information is accessible to the Application or to Adapty.

Sentry (crash reporting and stability monitoring)

Sentry is used to detect crashes and technical errors in order to improve reliability and performance.

Sentry may process:

Crash and error reports (e.g. stack traces, error messages)
Device information (e.g. device model, operating system version)
App information (e.g. app version, build number)

IP address collection is disabled. No intentional collection of personally identifiable information (such as names, email addresses, or payment data) takes place.

iCloud (Apple – data synchronization)

iCloud is used to synchronize app settings and custom tunings across devices linked to the same Apple ID.

Data is stored and processed by Apple under its own privacy policy.

These services are disabled by default and activated only after explicit consent within the Application. Consent can be withdrawn at any time.

Firebase SDK (Google Analytics)

If you consent, the Application uses Firebase SDK (Google Analytics) to understand how features are used and to improve usability and performance.

Processed data may include:

Usage Data (e.g. feature interactions, session duration)
Device and app information (e.g. device model, OS version, app version)
Approximate location data (country or city)

Analytics data is processed in an aggregated form and is not used for advertising or profiling.

6. Trackers and Analytics Controls

If you have consented to optional analytics, you may withdraw your consent at any time in the Application settings.

Additionally, you can manage analytics permissions via:

In-app privacy settings
System-level privacy controls provided by Apple

7. External Links and Services

User Guide (GitBook)

The user guide is hosted at https://guide.tunytuner.com/ and powered by GitBook. Please refer to GitBook’s privacy policy for details on their data processing practices.

8. Legal Bases for Processing

Where required by applicable law (such as the GDPR), Personal Data is processed based on:

Performance of a contract: providing the Application and its core features
Consent: optional analytics services
Legal obligations: compliance with applicable laws
Legitimate interests: app stability, security, and improvement

9. Data Retention

Personal Data is retained only for as long as necessary to fulfill the purposes described in this Privacy Policy, unless a longer retention period is required by law or based on your consent.

10. International Data Transfers

Some service providers may process data outside your country of residence.

Where required, appropriate safeguards (such as Standard Contractual Clauses) are used to ensure an adequate level of data protection.

11. Children’s Privacy

The Application is not intended for children below the age rating specified in the Apple App Store.
The Owner does not knowingly collect Personal Data from children below that age.

12. Your Rights

Depending on your location, you may have the right to:

Access your Personal Data
Request correction or deletion
Restrict or object to processing
Withdraw consent at any time
Receive a copy of your data in a portable format
Lodge a complaint with a data protection authority

Requests can be submitted using the contact details in Section 2.

13. Changes to this Privacy Policy

This Privacy Policy may be updated from time to time.
The date of the last update is shown at the top of this document.

If changes affect processing based on consent, new consent will be requested where required by law.