PianoMeter – Piano Tuner

A user-friendly app for professional-quality piano tuning. (Purchase required)

Willey Piano · com.willeypianotuning.toneanalyzer

4.3 out of 5 (3 ratings) 100K+ downloads v5.1.3 19.9 MB Android 7.0+ PEGI 3 · Everyone

Download APK 19.9 MB All versions

Signature matches the Google Play version Details

Watch the PianoMeter – Piano Tuner trailer on YouTube

At a glance

Latest version: v5.1.3 (137)
Updated: Oct 3, 2026 (7 days ago)
APK size: 19.9 MB
Requires: Android 7.0+ (API 24)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Music & Audio (app)
Listed since: May 1, 2021 (at least)
Permissions: 12 (1 sensitive)
Website: easypianotuner.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

PianoMeter – Piano Tuner is an app by Willey Piano in the Music & Audio category, listed since at least May 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 3.4.2, the APK grew from 9.4 MB to 19.9 MB and the minimum Android version rose from 5.0 to 7.0. It asks for 12 permissions, 1 of them sensitive: record audio. It asks for the same permissions as version 5.0.1. The app offers in-app purchases through Google Play and can read the advertising ID that ad and analytics services use.

What's new in v5.1.3

Bug fix affecting display on older devices

Description

From the listing uploaded by “appupdater”.

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.

Version history

3 versions are listed, going back to v3.4.2. Since v5.0.1 it requires Android 7.0+.

v5.1.3 LATEST Oct 3, 2026 19.9 MB TRUSTED v5.0.1 Apr 10, 2026 19.5 MB TRUSTED v3.4.2 Jan 8, 2026 9.4 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Oct 3, 2026.
Certificate issued to “Jukka Rauhala” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Oct 3, 2026
Validated against Google Play Oct 3, 2026
Signed byCN=Jukka Rauhala
Signing certificate (SHA-1)63:D7:C0:C9:71:CF:15:C0:9B:05:C7:DB:62:14:B9:97:DE:5D:2E:89
File MD5cfbd2a950229de4728a889709c3c8d4e
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (12)

PianoMeter – Piano Tuner requests 12 permissions, 1 of them sensitive.

Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) com.willeypianotuning.toneanalyzer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Microphone android.hardware.microphone
Portrait screen android.hardware.screen.portrait

PianoMeter – Piano Tuner APK: questions and answers

Is there a version of PianoMeter – Piano Tuner for older Android phones?

The current version needs Android 7.0 or later. Version 3.4.2 is the newest listed build that installs on Android 5.0 and later. Get version 3.4.2 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is PianoMeter – Piano Tuner free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the PianoMeter – Piano Tuner APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is cfbd2a950229de4728a889709c3c8d4e.