pianoscope – Piano Tuner 4+

Professional piano tuning

Frank Illenberger

Designed for iPad

    • 5.0 • 14 Ratings
    • Free
    • Offers In-App Purchases



pianoscope turns your iPhone or iPad into the ultimate assistant for creating high-quality piano tunings - for professional piano tuners and passionate pianists alike.

Free two-week trial. pianoscope standard & pro are in-app purchases.


With the pro edition of pianoscope you can increase your precision and efficiency and make your work less tiresome. Measure the inharmonicity of an instrument at lightning speed, or accelerate the pitch raising of strongly detuned pianos. With pianoscope pro you will meet the expectations of even the most demanding pianists


Conventional programs determine the required stretch similar to piano tuners working aurally. They start with a temperament octave and go outward from there with fixed intervals. The disadvantage is that you, as a tuner, have to determine which intervals are suitable for the partial structure of an individual instrument.
With pianscope, you only have to decide which intervals should generally be as pure as possible and choose the appropriate style. With thousands of tests, which would be impossible for a human, the program now searches for a tuning curve that optimally meets your wishes.

Find more information on www.pianoscope.app/features/pro


Are you annoyed that your piano soon loses its finely balanced sound after being professionally tuned? Then, with pianoscope standard and some practice, you can create high-quality tunings yourself. You don’t have to to train your hearing for years. All you need is a little manual talent and the courage to learn a new skill.

Find more information on www.pianoscope.app/features/standard


- Measurement of the individual inharmonicity and overtone strengths of an instrument
- Available tuning styles: Balanced, Octaves Pure, Fifths Pure, Twelfths Pure, Ninetenths Pure
- Selection of concert pitch: 400.00 Hz - 480.00 Hz
- Numerical display of target pitch and current deviation in cents
- Fast reacting automatic key recognition
- Fast responding graphical feedback with tuning scale and/or stroboscope
- Individual tuning documents for each of your instruments.
- Synchronize documents between multiple iPhones and iPads via iCloud Drive, Dropbox or similar cloud services.
- Adjustable range, for example for tuning harpsichords
- Use one of over 70 predefined unequal temperaments.
- Supports the Dark Mode of iOS


- Graphical representation of the calculated tuning curves
- Detailed deviation curves: Graphical representation of the deviation of fourths, fifths, octaves, twelves, double octaves, nineteenths and triple octaves
- Create custom tuning styles with individual weighting of single intervals
- Optional extra stretching, separate for bass and treble
- Individual calculation of the over-pull for pitch-raising instruments.
- Showing the current partial intensities in the tuning view
- Advanced strobe settings
- Entry of additional information for each instrument: manufacturer, model, serial number, notes
- Calibrate your iPhone or iPad to a reference tone
- Define your own unequal temperaments.

Download pianoscope now and start the free trial of all features!

Privacy policy: https://pianoscope.app/en/privacy
Terms of use: https://pianoscope.app/en/terms

What’s New

Version 1.7.0

New Features:

- The partial spectrum in pianoscope can now also help you to train your aural skills. To do this, tap on the "Partials" label in the partials area above the keyboard, and in the upcoming menu switch to the "Maximum" setting. Now the partial bars are displayed even after a tone has decayed. If you now tap on one of the bars, pianoscope plays a recording of the respective partial tone over the loudspeaker or headphones of your device.

- pianoscope is now also localized in Spanish. Thanks to Roy Howard for the translation!

Fixed Issues:
- Sometimes the tuning curve scale shows Hz instead of ¢.

Ratings and Reviews

5.0 out of 5
14 Ratings

14 Ratings

Mrhandlin ,

An impressive professional piano tuning app

I’m a professional piano technician. I’m extremely impressed with this app. As another reviewer mentioned, the app has a very clean and intuitive interface that is easy to use and understand. Although simple to use, it has many advanced features- such as the ability to weight specific partials and adjust many parameters of the tuning. In addition, it has many historic temperaments, far more than other piano tuning software. I really have no significant complaints or issues whatsoever and I’m excited to see this app continue to be developed.

Davisbanddude ,

But pricey but great tool

Got a 1919 Knabe for free and restored it. It needed several tunings and after trying to free trial I found it was able to tune the extremes ends of the instrument better than I could myself. A $100 is a lot for an app but considering that’s what it costs to have the instrument tuned once I can now maintain it myself and save money in the long run. It’s much simpler to use than some of the more complicated tuners out there.

John Lanzetta ,

John Lanzetta

First time I used it i noticed a superior quality with my tunings. Unique feature is the weight selection adjust the inharmoncity curve!!!

App Privacy

The developer, Frank Illenberger, 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


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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