Short version: our applications have no accounts, advertising or tracking SDKs. Piano measurements, vocal practice results and saved records stay on your device. Vocal Trainer can send anonymous lesson statistics, and only if you switch that on. The website keeps anonymous aggregate counters and uses consent-aware Google Analytics as described below.
Microphone
Anisotropic Piano Tuner uses the microphone to measure pitch, inharmonicity and sound characteristics. Anisotropic Vocal Trainer uses it to follow sung pitch, rhythm, dynamics and melodic shape. Audio analysis happens on the device and is not transmitted to us.
Piano Tuner records a Voice Memo only when you request it. Vocal Trainer saves practice results and recordings only as part of your local practice library. You control deletion and any report or file you choose to share.
Camera
The Photos feature takes pictures of an instrument only when you press the camera button. Photos are stored on the device inside the application's own library and are not uploaded. The application does not access your photo library.
Data you create
Instrument profiles, tuning curves, measurement history, vocal range, lesson progress, practice results, notes, voice memos and photos are stored in the relevant application's private storage on your device. Export and report actions pass a file to the standard operating-system share sheet; you decide where it is sent.
Optional usage statistics in Vocal Trainer
Anisotropic Vocal Trainer has one setting, “Send statistics to improve the product”. It is off until you turn it on, and you can turn it off again at any time in Controls. Anisotropic Piano Tuner has no such setting and sends nothing.
While the setting is on, the app sends one short record when a lesson ends — whether you finished it or left it part-way after singing something. The record contains:
- the lesson number, whether the lesson was finished and, if not, at which step it was left;
- for each step, the kind of exercise, its score and whether it was skipped; the lesson’s overall score and the averages of its scoring components (such as pitch accuracy or steadiness);
- the minutes sung in that lesson;
- the difficulty the lesson was built with (for example, the number of notes, the widest interval and the tempo), whether the programme had raised or eased it after the previous lesson, how the programme led to the lesson (the next one, the same one again, a step back, or one you picked yourself) and how many times you had already completed that lesson;
- the difficulty level chosen in Controls and whether it is set automatically, whether lessons adapt to you, and the width of your measured vocal range in semitones;
- the App Store country and the app version.
The record contains no audio, no name, no email, no account, no device or advertising identifier and no other identifier. Records are not linked to one another or to you, and the server keeps only the date a record arrived — not your IP address or the time of day. We use these records only to see where lessons are too hard, too easy or abandoned, and to adjust how the programme adapts.
Statistics are never requested or sent for profiles set to an age under 18.
Purchases
The full version is unlocked with a subscription or a one-time purchase. Payments and subscription management are handled entirely by Apple through the App Store. To confirm what you have unlocked, the application checks your purchase status with Apple. This exchange contains no personal data and is not shared with us — we never see your name, email or payment details.
What the applications do not do
- They do not collect, store or sell personal data.
- They contain no third-party analytics, tracking or advertising SDKs. The only data an application can send us is the optional Vocal Trainer statistics described above.
- They require no Anisotropic Audio account, registration or sign-in.
- Core tuning and vocal-analysis features run on your device.
Website analytics
The website keeps anonymous daily totals for page views, product-page views, product-link clicks and App Store clicks in the Anisotropic Audio database. These counters contain no IP address, cookie identifier, account, email, browser fingerprint, precise location or individual event history. They cannot be used to identify or follow a visitor and are used only to understand which pages and products are useful.
This website uses Google Analytics 4 to understand visits, pages viewed, referral and campaign sources, general device and browser information, approximate region, and clicks that lead to the App Store. For visitors in the European Economic Area, the United Kingdom and Switzerland, Google Analytics is not loaded until they select “Allow analytics”. Elsewhere, it loads automatically where consent is not required. Advertising storage, advertising user data and ad personalization remain disabled for everyone.
To decide whether a consent prompt is required, the site requests a two-letter country code from the Country geolocation service. The request sends no cookies or credentials, Country states that it does not log requests, and we retain neither the visitor's IP address nor country. Only the result “regulated region” or “other region” is kept in session storage for the current browser tab. If this lookup fails, the site shows the consent prompt.
If you make an analytics choice, it is saved in your browser's local storage. Any visitor can review or withdraw analytics through the “Privacy choices” button. Withdrawing consent stops further analytics collection and removes Google Analytics cookies accessible to this website. For details about Google's processing, see the Google Privacy Policy.
Website analytics are separate from the applications; the applications themselves contain no third-party analytics or tracking SDKs.
Children
The applications do not collect personal data from any user, including children. The optional Vocal Trainer statistics are not offered or sent for profiles set to an age under 18.
Changes to this policy
If this policy changes, the revised text and its effective date will be published on this page.
Contact
Questions about the app or this policy: support@anisotropicaudio.com
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