G-Tuner app icon

G-Tuner

High-performance guitar tuner app with high noise tolerance and accuracy

nobapp · com.nobapp.g_tuner

Not rated yet 50K+ downloads v1.1.1 1.4 MB Android 4.0.3+ PEGI 3 · Everyone

  • Signature matches the Google Play version Details

At a glance

Latest version
v1.1.1 (1010103)
Updated
Jun 29, 2026 (3 months ago)
APK size
1.4 MB
Requires
Android 4.0.3+ (API 15)
CPU support
Any (no native code)
Category
Music & Audio (app)
Listed since
May 20, 2021 (at least)
Permissions
2 (1 sensitive)
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

G-Tuner is an app by nobapp in the Music & Audio category, listed since at least May 2021. It has no native code, so it runs on any Android processor.

It asks for 2 permissions, 1 of them sensitive: record audio. The app offers in-app purchases through Google Play.

What's new in v1.1.1

The first official release of G-Tuner

Description

From the listing uploaded by “appupdater”.

"Playing the guitar is fun, but tuning it is a pain ..." G-Tuner will surely be the best tuner for players who think so. In many tuner applications so far, the indication tends to be unstable due to noise, which prevents the smooth tuning. G-Tuner greatly reduces the influence of noise by our pitch detection technology specialized for the microphone input, and it makes players free from the frustration. And also about basic performances such as accuracy and responsiveness of indication, we have achieved a high level that can be used in professional applications. While the interface is simple enough even for beginners, it also offers some practical options to meet advanced requirements. ### Specification ### - Supported instruments: Any plucked string instruments such as Guitar, Bass guitar, Banjo, etc. - Pitch accuracy: ±0.1 cents (at 440 Hz) - Pitch range: E0 to E7 (Note: 4th str. of bass = E1, 1st str. of guitar = E4) - Calibration range: 390 to 490 Hz (1 Hz step) - FLAT / CAPO (shift tuning): -5 to +7 frets - Display modes:     - Strings mode     - Chromatic mode* - Tolerance setting:     - MED (in-tune = ±5.0 cents)     - HIGH* (in-tune = ±2.5 cents) (The value is selectable) - Altered tuning*:     - In addition to preset data for guitar, bass guitar, banjo, mandolin, ukulele     - user-defined tunings can be added. - Other features:     - In-tune notification     - Tuning state indication for each string     - Detailed pitch information* (detected pitch, target pitch, pitch error) * these features are advanced options We offer a free trial period of 30 days for these options.

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Jun 29, 2026.
  • Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.

Store checks and file details

  • Developer signature verified Jun 29, 2026
  • Validated against Google Play Jun 29, 2026
  • Signed byCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
  • Signing certificate (SHA-1)C6:58:62:AF:98:D0:29:90:8D:7A:A5:A0:6C:F7:BC:0E:63:47:90:E7
  • File MD502314ec9af04c1387e05b808945bc502
  • 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. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (2)

G-Tuner requests 2 permissions, 1 of them sensitive.

Required hardware & features

G-Tuner APK: questions and answers

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 G-Tuner free?

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

Is the G-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. After downloading, check that the file's MD5 is 02314ec9af04c1387e05b808945bc502.

Tags

More Music & Audio apps