Anisotropic Piano Tuner

Professional inharmonicity ETD

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

A professional piano ETD that measures per-note inharmonicity and builds an individual stretch curve for the exact instrument in front of you. Free three-octave demo. Anisotropic Piano Tuner is a professional Electronic Tuning Device (ETD) that builds the tuning around the exact instrument in front of you. MEASURED, NOT ASSUMED Per-note inharmonicity is measured from the live spectrum with a high-resolution FFT. Your stretch curve is calculated from those measurements — not copied from a generic piano profile. CORE TUNING • Individual stretch curve across all 88 keys • Octave styles, or an entropy-based solver • Manual target adjustment for any key • Electronic strobe and needle meter • Stable pitch detection with an adjustable noise gate TEMPERAMENTS • Equal plus historical temperaments: Werckmeister III, Kirnberger III, Vallotti, Young, Pythagorean, Meantone 1/4 and 1/6, Kellner • Full custom temperament editor PITCH RAISE • Survey the instrument, calculate compensated targets and perform a preliminary pass with an adjustable over-pull factor BEYOND PITCH • Sound-quality and stability indicators • Unison beat analysis and aural interval checks INSTRUMENT RECORDS • Save each piano with its curve, history, notes, voice memos and reference photos • Generate a clear text report • Back up your whole library to a single file — no account, no cloud TRY IT FREE Three complete octaves are free. Unlock all 88 keys with a monthly or yearly subscription, or a one-time lifetime purchase. PRIVATE BY DESIGN The tuning features work fully offline. No accounts, no analytics, no advertising. Everything stays on your device. Built-in technical help in 13 languages. Universal app for iPhone and iPad. Anisotropic Piano Tuner offers an auto-renewing subscription (monthly or yearly) and a one-time lifetime purchase to unlock all 88 keys. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in your App Store account settings. Terms of Use: https://anisotropicaudio.com/terms.html Privacy Policy: https://anisotropicaudio.com/privacy.html

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Victor Rovinsky, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Victor Rovinsky
    Size
    • 8.3 MB
    Category
    • Music
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Age Rating
    4+
    In-App Purchases
    Yes
    • Full Version — Yearly $99.99
    • Full Version — Monthly $19.99
    • Lifetime — all 88 keys $299.00
    • Learn More
    Copyright
    • © 2026 Anisotropic Audio
  • Privacy Policy

    • More by Victor Rovinsky