pianoscope – Piano Tuner
Not in any tracked top chart right now.
Updated 28 Sep 2026 · rankings refresh through the day
DeveloperFrank Illenberger
CategoryMusic
PriceFree
Released
Rating★ 4.7 (83)
Version4.0.6
Age rating4+
First seen by us
25 Sep 2026
Installs (est.)10k+ worldwide
Rating
4.7 ★
83 ratings
Measured
pianoscope – Piano Tuner on the App Store
App details
App ID
1529249459
Publisher
Frank Illenberger
Minimum OS
iOS 18.0+
Content rating
4+
Languages
12
CS NL EN FR DE IT JA PL RU ZH ES ZH
Size
13 MB
pianoscope – Piano Tuner downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.7 ★
83 ratings
Measured
Ratings
83
Measured
About pianoscope – Piano Tuner
pianoscope turns your iPhone or iPad into the ultimate assistant for high-quality piano tuning — for professional piano tuners and passionate pianists alike.
Free two-week trial. pianoscope Standard & Pro are available as in-app purchases.
FOR PROFESSIONAL PIANO TUNERS
With the Pro edition of pianoscope, you can increase your precision and efficiency and make your work less strenuous. Measure the inharmonicity of an instrument at lightning speed, or accelerate the pitch raising of strongly out-of-tune pianos. With pianoscope Pro, you will meet the expectations of even the most demanding pianists.
HOW IS PIANOSCOPE DIFFERENT FROM OTHER PROFESSIONAL PROGRAMS?
Conventional programs determine the required stretch similarly 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 pianoscope, you only have to decide which intervals should generally be as pure as possible and choose the appropriate tuning style. Through thousands of calculations — impossible for a human — the program finds a tuning curve that optimally satisfies your requirements.
Find more information at www.pianoscope.app/features/pro
FOR PASSIONATE PIANISTS
Are you frustrated that your piano soon loses its finely balanced sound after being professionally tuned? With pianoscope Standard and some practice, you can create high-quality tunings yourself. You don't have to train your hearing for years. All you need is a little hands-on skill and the courage to learn something new.
Find more information at www.pianoscope.app/features/standard
STANDARD FEATURES (AVAILABLE VIA IN-APP PURCHASE)
- Measurement of the individual inharmonicity and partial strengths of an instrument
- Available tuning styles: Balanced, Octaves Pure, Fifths Pure, Twelfths Pure, Nineteenths Pure
- Concert pitch selection: 400.00 Hz – 480.00 Hz
- Numerical display of target pitch and current deviation in cents
- Fast-reacting automatic key selection
- Responsive graphical feedback with indicator scale and/or strobe
- Individual tuning documents for each of your instruments
- Synchronize documents across multiple iPhones and iPads via iCloud Drive, Dropbox, or similar cloud services
- Adjustable range, for example for tuning harpsichords
- Use one of over 80 predefined unequal temperaments
- Supports iOS Dark Mode
PRO FEATURES (AVAILABLE VIA IN-APP PURCHASE)
- Graphical representation of the calculated tuning curves
- Detailed deviation curves for fourths, fifths, octaves, twelfths, double octaves, nineteenths, and triple octaves
- Create custom tuning styles with individual weighting of single intervals
- Optional extra stretch, separate for bass and treble
- Individual calculation of the overpull for pitch raising
- Perform pitch raises without muting unisons using the spectrum display
- Optim
Free two-week trial. pianoscope Standard & Pro are available as in-app purchases.
FOR PROFESSIONAL PIANO TUNERS
With the Pro edition of pianoscope, you can increase your precision and efficiency and make your work less strenuous. Measure the inharmonicity of an instrument at lightning speed, or accelerate the pitch raising of strongly out-of-tune pianos. With pianoscope Pro, you will meet the expectations of even the most demanding pianists.
HOW IS PIANOSCOPE DIFFERENT FROM OTHER PROFESSIONAL PROGRAMS?
Conventional programs determine the required stretch similarly 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 pianoscope, you only have to decide which intervals should generally be as pure as possible and choose the appropriate tuning style. Through thousands of calculations — impossible for a human — the program finds a tuning curve that optimally satisfies your requirements.
Find more information at www.pianoscope.app/features/pro
FOR PASSIONATE PIANISTS
Are you frustrated that your piano soon loses its finely balanced sound after being professionally tuned? With pianoscope Standard and some practice, you can create high-quality tunings yourself. You don't have to train your hearing for years. All you need is a little hands-on skill and the courage to learn something new.
Find more information at www.pianoscope.app/features/standard
STANDARD FEATURES (AVAILABLE VIA IN-APP PURCHASE)
- Measurement of the individual inharmonicity and partial strengths of an instrument
- Available tuning styles: Balanced, Octaves Pure, Fifths Pure, Twelfths Pure, Nineteenths Pure
- Concert pitch selection: 400.00 Hz – 480.00 Hz
- Numerical display of target pitch and current deviation in cents
- Fast-reacting automatic key selection
- Responsive graphical feedback with indicator scale and/or strobe
- Individual tuning documents for each of your instruments
- Synchronize documents across multiple iPhones and iPads via iCloud Drive, Dropbox, or similar cloud services
- Adjustable range, for example for tuning harpsichords
- Use one of over 80 predefined unequal temperaments
- Supports iOS Dark Mode
PRO FEATURES (AVAILABLE VIA IN-APP PURCHASE)
- Graphical representation of the calculated tuning curves
- Detailed deviation curves for fourths, fifths, octaves, twelfths, double octaves, nineteenths, and triple octaves
- Create custom tuning styles with individual weighting of single intervals
- Optional extra stretch, separate for bass and treble
- Individual calculation of the overpull for pitch raising
- Perform pitch raises without muting unisons using the spectrum display
- Optim
Latest updates
4.0.6
RENAMING INSTRUMENTS
The name of an instrument can now be edited directly in the instrument settings. The document is renamed along with it. If another document already uses that name, a number is appended automatically.
ZOOMING THE TUNE SCALE AND THE KEYBOARD
On the iPad the menu bar offers new commands for enlarging and reducing the tune scale and the on-screen keyboard, including keyboard shortcuts. Until now this was only possible with a two-finger gesture.
SWIPING THROUGH THE PITCH RAISE SETTINGS
Swipe left and right to move between the pages of the pitch raise settings.
FIXES
• Starting the app could hang while the license was being checked over a poor network connection.
• The one-time pro purchase was blocked while a cancelled subscription was still running.
• Typing at the beginning of the instrument notes duplicated the input at the end and moved the cursor.
• The beat synchrony chart was cut off at the bottom edge on the iPad.
• Swiping between temperaments did not work while the chart was shown in a panel.
• Overlapping partial bars could cover each other's numbers.
• The weight options in the tuning plan menu are now dimmed while no deviation curves are shown.
• Fixed issues with startup when running on macOS.