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Description

PianoMeter (formerly Easy Piano Tuner) is a piano tuning app that will transform your Android device into a professional quality electronic tuning aid.

NOTE
The "free" version of this app is primarily for evaluation, and it only allows you to tune notes on the piano between C3 and C5. To tune the entire piano you will need to buy an upgrade through an in-app purchase.

What makes PianoMeter unique
Unlike regular chromatic tuning apps that simply tune to a pre-calculated equal temperament, this app actively measures the tonal characteristics of each note and automatically calculates the ideal “stretch” or offset from equal temperament. In other words, it creates a custom tuning for your piano with the best compromise between intervals like fifths, fourths, octaves, and twelfths, the way aural piano tuners do when fine-tuning.

Functionality and pricing
There are three levels of functionality: a free (evaluation) version, a paid "plus" version with basic tuning functionality, and a "professional" version with features geared towards professional piano tuners. The extra functionality is unlocked through one-time in-app purchases.

The Free version includes the following functionality:
• Tuning functionality for the mid-range of the piano only
• Automatic note detection
• Ability to measure each note on the piano to see how its current tuning compares to the ideal tuning curve (see if a piano is roughly in tune)
• Swipe in the graphing area to show a live frequency spectrum or the inharmonicity of measured notes.

Upgrading to "Plus" adds the following functionality:
• Tuning functionality for the entire piano
• Tune to frequency standards other than A=440
• Tune to historical or custom temperaments
• Calibrate device to an external frequency source

Upgrading to Professional unlocks all features of the "Plus" version, plus the following:
• The ability to save and load tuning files, so a piano doesn't need to be re-measured each time it is tuned
• Pitch raise mode that calculates overpull for an initial first pass "rough" tuning (for pianos that are extremely flat)
• Access to all future features and enhancements

Upgrade costs:
Free to Plus (approximately US$25)
Free to Pro (approximately US$125)
Plus to Pro (approximately US$100)

Note about permissions
This app requires permission to access the microphone on your device and permission to read and write files.

Google Play Store Category:

Primary: Applications

Secondary: Music & Audio

Google Play

Privacy Policy

Total Ratings

210
5
120
4
27
3
10
2
2
1
49

Screenshots

PianoMeter – Professional Piano Tuner screenshot 1PianoMeter – Professional Piano Tuner screenshot 2PianoMeter – Professional Piano Tuner screenshot 3PianoMeter – Professional Piano Tuner screenshot 4PianoMeter – Professional Piano Tuner screenshot 5PianoMeter – Professional Piano Tuner screenshot 6PianoMeter – Professional Piano Tuner screenshot 7PianoMeter – Professional Piano Tuner screenshot 8PianoMeter – Professional Piano Tuner screenshot 9PianoMeter – Professional Piano Tuner screenshot 10

Version History

Launched May 21, 2017 (almost 3 years ago).

Releasing new versions every about 2 months, on average.

Nov 10
2019
(Current)
Version 2.1.4

Bug fix (issue with target frequencies for strobe spinners not updating after exiting pitch raise mode)

Oct 15
2019
Version 2.1.3

Add graphing to dark mode (by popular request)
Performance improvements
Add a "Global pitch offset" (pro version only)

Oct 01
2019
Version 2.1.2

Reduce weight of lower partials in the bass
Various minor fixes

Sep 30
2019
Version 2.1.1

Allow all "A" notes to be tuned in the free version (in addition to C3-C5) to aid in evaluation
Minor enhancements to the piano keyboard at the bottom of the screen
Minor fixes

Aug 27
2019
Version 2.1.0

Introducing Dark Mode: a simple dark layout with no graphs uses less battery.
Refactor file management, making it faster and more efficient.
Long press in the graphing area to delete a data point of inharmonicity, or to reset all points on the tuning curve graph.
Slightly increase "weight" of 6:2 twelfths and decrease weight of 10:5 octaves. This will result in slightly less “stretch” in the lower bass of some pianos.
Expanded range for possible values of the lowest unwound string (down to D2).

Aug 02
2019
Version 2.0.3

2.0.3:
Add option for clock in info box
Modify graphic for background wood panel (smaller APK)
Bug fixes (red line position, buffer issue affecting some old tablets)

2.0.1-2:
Bug fixes.

2.0.0:
New app name: “PianoMeter”
Dial/numbers now update 2x as fast (faster response to changes in pitch)
Add support for unequal temperaments
Add support for multiple languages
New (vector) graphics; download size reduced by 75%
Small changes to note detection, inharmonicity measurement, and user interface

May 21
2019
Version 2.0.2

2.0.2:
Improve memory consumption on older tablets
Fix bug that was preventing the modification of tuning files while the tuning curve was locked

2.0.1:
Bug fixes.

2.0.0:
New app name: “PianoMeter” and new icon
Dial/numbers now update 2x as fast (faster response to changes in pitch)
Add support for unequal temperaments
Add support for multiple languages
New (vector) graphics; download size reduced by 75%
Small changes to note detection, inharmonicity measurement, and user interface

May 14
2019
Version 2.0.1

2.0.1:
Bug fixes

2.0.0:
New app name: “PianoMeter” and new icon.
Dial/numbers now update 2x as fast (faster response to changes in pitch).
Add support for tuning in unequal temperaments.
Add support for multiple languages.
New (vector) graphics; download size reduced by 75%.
Small tweak to octave weighting in the bass (A1-A3) giving slightly more weight to 5:10 and 4:8 octaves.
Small changes to note detection, inharmonicity measurement, and user interface.

May 12
2019
Version 2.0.0

New app name: “PianoMeter” and new icon.
Dial/numbers now update 2x as fast (faster response to changes in pitch).
Add support for tuning in unequal temperaments.
Add support for multiple languages.
New (vector) graphics; download size reduced by 75%.
Small tweak to octave weighting in the bass (A1-A3) giving slightly more weight to 5:10 and 4:8 octaves.
Small changes to note detection, inharmonicity measurement, and user interface.

May 11
2019
Version 1.3.2

Improved measurement of inharmonicity (reduce bad measurements)
Allow modification of an inharmonicity weight factor (advanced users)
Bug fixes

Sep 28
2018
Version 1.3.1

Bug and crash fixes

Aug 01
2018
Version 1.3.0

Better overpull calculation for pitch raise that takes into account string transitions.
Bug fixes

Jul 23
2018
Version 1.2.1

Version 1.2.1
Enhancements for tuning file management: multi-file select and mass export/import
Slightly smoother needle movement for more stable pitch readings
Bug fixes

Feb 17
2018
Version 1.2.0

Version 1.2.0
Add support for note names in multiple languages (eg. C, D, E vs. Do, Re, Mi)
Small improvements to file management, including searching, sorting, and sharing tuning files
Bug fix related to custom pitch offsets and the tuning curve display
Add a "Plus" level of functionality between "Free" and "Professional" geared toward hobbyists
Small bug fixes and enhancements

Version 1.1.0
Major improvements to the spinning “strobe” rings
Enhancements to the Pitch Raise procedure

Oct 06
2017
Version 1.1.0

The spinning “strobe” rings are now more responsive, giving faster and more precise feedback on the instantaneous pitch. The divisions per ring now change based on the frequencies of the harmonics being measured.
Major improvements to the Pitch Raise procedure, including more accurate initial measurements and the addition of a maximum overpull setting.
Many bug fixes and enhancements.

Oct 05
2017
Version 1.0.2

Removed unnecessary contacts permission

May 21
2017
Version 1.0.1

Make the lock icon smaller in the free trial version so the note name is visible.

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