PianoMeter – Piano Tuner
by Willey Piano
· Music & Audio
· Free
On Google Play since May 2017
· Data updated
PianoMeter – Piano Tuner is made and published by Willey Piano. AppBrain is an independent app data site and isn't affiliated with Willey Piano. The app name, icon, screenshots and description belong to Willey Piano and are shown as published on Google Play.
AppBrain's verdict
Established- Rating on Google Play
- 3.91
- 777 ratings
- Installs
- 490 thousand
- Last updated
- August 12, 2026
- Ads
- No ads
- Size
- 11.1 MB
PianoMeter – Piano Tuner has 490 thousand installs. Users are divided: 3.9 stars from 777 ratings.
User feedback
Ratings and reviews on Google PlayComments on PianoMeter – Piano Tuner for Android
★★★★★
RGcubed
· Apr 3, 2025
As a piano tuner for 5 years, this app truly has been great! I used to tune by ear and with a stretch tuner but this app provides accuracy that is unmatched and makes my tuning appointments more efficient.
★★★★★
Kent V. Busse
· Mar 15, 2022
Definitely professional quality. Initially equal to aural accuracy. By that I mean that if the meter shows within one-half cent, the unison sounds accurate, and if I tune aurally, the measurements fall within one-half cent. That means about equal accuracy either way. There are definite exceptions, especially in wound strings. There have been cases where aural tuning required me to set two wires one or two cents apart according to the meter. That's fair enough--the physical wires are imperfect. After 50 years of aural tuning, my most noticeable speed-up is that Piano Meter detects slippage immediately. When I tune an aural unison, if the "fixed" wire slips, both wires are flat, and I need to make beat comparisons to find the error. With Piano Meter, I can SEE the slippage while it is happening. Overall this makes faster and much more stable tuning. Next advantage is the calculated intervals. In aural tuning, "a little bit faster than" is not a precise quantitative standard. One gets a feel for how different the beat frequencies should be, but Piano Meter works it out over the whole piano. Proofreading with all my aural tests shows that Piano Meter makes a better end-to-end temperament and stretch than I do aurally. After 50 years of tuning (now 52) I have enough hearing loss to NEED the expert coaching that Piano Meter gives. Especially in the high and low extremes, this ETD brings me into the ballpark more reliably than aural estimation. Without Piano Meter, I might not be tuning pianos any longer. There are stretch choices in Piano Meter for those who do enough tuning to distinguish the results. I'm nearly retired now, and "out of the box" tuning with Piano Meter suit me just fine. I am probably making accommodations unconsciously. It would be interesting to tune a dozen pianos at each of several stretch settings, but I'm a little old for that now. Serious pitch raisings (more than 20 cents) are a miracle here. Piano Meter makes an almost perfect overfull so that my second pass is much faster because the wires don't need much touch-up. It validates the old rule I learned 50 years ago that changing pitch more than 20 cents (maybe even 10 cents) is faster in two passes than in one.
★☆☆☆☆
Josh Cooksey
· Aug 3, 2026
I love so much about this app. But I paid $300, and it's tripping out so much on the d7 up. I've tuned about 100 pianos with this app and paid a lot and am used to it so wish it worked better in the upper registry. Please fix this!
★☆☆☆☆
Devdev devdev
· Feb 27, 2025
Love this app! BUT - I got a new phone and can't figure out how to log in to my existing account. I've already paid, and it's not OK that I would have to pay again in order to use the services I've already purchased. I will add more stars to my review if/when this is resolved.
★☆☆☆☆
Jason Bray
· Aug 11, 2023
Well, 3 years later, I had given up on the app because at some point it just goes haywire and can't hear pitches. I had taken up tuning my upright and the app was working fantastic, until I walked out to my other studio and tried it on my grand piano which it could not hear. I didn't think anything of it until this morning when I tried it again and the app had gone absolutely haywire, and you couldn't tune anything with it cuz it couldn't recognize where it was? Discouraged and disappointed.
Google Play Rating history and histogram
Store listing
By Willey Piano, from Google Play“A user-friendly app for professional-quality piano tuning. (Purchase required)”
Screenshots by Willey Piano, from the Google Play listing
Description by Willey Piano Written by the developer, not by AppBrain. Click to read.
PianoMeter 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:
• 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)
• Custom tuning styles: create a custom tuning curve by adjusting interval weighting and stretch
• Access to all future features and enhancements
Upgrade costs:
Free to Plus (approximately US$30)
Free to Pro (approximately US$350)
Plus to Pro (approximately US$320)
Note about permissions
This app requires permission to access the microphone on your device and permission to read and write files.
Recent changes:
• Deleted tunings can now be recovered when Google Drive sync is on
• Wider range for extra treble and bass stretch, and the slider now moves in whole cents
• Bug fixes
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:
• 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)
• Custom tuning styles: create a custom tuning curve by adjusting interval weighting and stretch
• Access to all future features and enhancements
Upgrade costs:
Free to Plus (approximately US$30)
Free to Pro (approximately US$350)
Plus to Pro (approximately US$320)
Note about permissions
This app requires permission to access the microphone on your device and permission to read and write files.
Recent changes:
• Deleted tunings can now be recovered when Google Drive sync is on
• Wider range for extra treble and bass stretch, and the slider now moves in whole cents
• Bug fixes
Safety and technology
Found in the app by AppBrain- Ads
- No ads
- Price
- Free
- Libraries
- 16
- App size
- 11.1 MB
- Needs Android
- 7.0+
- Content rating
- Everyone
Technologies used by PianoMeter – Piano Tuner
15 permissions
·
16 libraries
Subscribe to see full permission and library details
Releases
Updates seen on Google Play- Version
- 5.2.1
- Launched
- May 2017
Alternatives
Similar apps and more from Willey PianoAlternatives to PianoMeter – Piano Tuner
Installs
Tracked by AppBrain- Last 30 days
- 5.2 thousand
- Per day
- 170
- 30-day average
- Play install range
- 100+ thousand
- Launched
- May 2017
Installs over time
PianoMeter – Piano Tuner has been installed 490 thousand times. Over the past 30 days, it averaged 170 installs per day.
Rankings
Google Play top charts- Highest rank
- #171
- Chart
- Top Grossing
- Music & Audio
- Country
- Iran
Google Play Rankings for PianoMeter – Piano Tuner
Top rankings
| Rank | Country | Category | List |
|---|---|---|---|
| 171 | Iran | Music & Audio | Top Grossing |
Ranking history in Iran
About the app and developer
About PianoMeter – Piano Tuner
PianoMeter – Piano Tuner is a music & audio app developed by Willey Piano.
Install Statistics
PianoMeter – Piano Tuner has been installed 490 thousand times. In the last 30 days, the app was installed 5.2 thousand times.
User Ratings
PianoMeter – Piano Tuner is rated 3.91 out of 5 stars. The rating is based on 780 ratings.
App Information
PianoMeter – Piano Tuner is freely available from Google Play. The app size is 11.05 MB. The latest version available is 5.2.1. The last update was on August 12, 2026.
Technical Requirements
PianoMeter – Piano Tuner requires Android 7.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since May 2017.
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