# Viola Tuner – XTuner PRO — Accurate Viola Tuner App

> Accurate and free offline viola tuner with multiple professional tuning modes. (iPhone/iPad app by NETIGEN Kluzowicz sp. j..)

- Source: https://appshunter.io/ios/app/viola-tuner-xtuner-pro/id6744968300 (this page in markdown: same URL + `.md`)
- Developer: [NETIGEN Kluzowicz sp. j.](https://appshunter.io/developer/892331873)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Rating: 3.10/5 from 9 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 54 MB
- Languages: American English
- Released: 2025-06-05
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/viola-tuner-xtuner-pro/id6744968300/reviews.md

## What is Viola Tuner?

Viola Tuner – XTuner PRO is an easy-to-use free mobile application with which you will be able to tune your viola quickly.

The sounds for our application were recorded by professional musicians. Sounds that cannot be generated by a musician have been created synthetically. App works offline. What is the most important: it is a free tuner.   

The algorithm in the viola tuner offline app has been prepared for the most effective recognition of instrument sounds. To get the auto tune result, play the sound several times.  

Viola Tuner – XTuner PRO app for instruments has three modes: auto tune, manual and pro - chromatic tuner mode. App works offline.

- Auto Tune – automatic tuning – examined the frequency of the signal is interpreted to the next clear sound of the specific frequencies of pure sound.  
- Manual – sound tuning - select a specific sound that will be tuned.  

Features in the tuning app:  
- recordings of real sounds of viola
- the ability to set the frequency of sound "a" (concert pitch) in Hz (herz),  
- the ability to determine the deviation from the base frequency in cents, 
- instrument head view,
- ability to set frequency filter 
- custom tuning
- presets for your music instrument
- chromatic tuner mode – you can practise diapason using it 
- auto tune and manual mode 
- professional frequency settings – choose the concert pitch in Hz and transposition 
- viola tuner offline
- it is a free pro tuner; you don’t have to pay. 

If you would like to have version of the free tuner with no ads, you can buy premium forever or subscription. If you will have any problems with Viola Tuner – XTuner PRO app, please feel free to contact us: mobile@netigen.eu.

EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://netigen.eu/privacy/

More information: https://xtunerpro.com/viola

## Key features

- Professional viola sound recordings
- Offline tuning capabilities
- Auto tune, manual, and chromatic modes
- Adjustable concert pitch (Hz)
- Deviation display in cents
- Custom tuning and presets

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 1 week subscription + trial | $2.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Forever one-time payment | $19.99 | one-time |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/viola-tuner-xtuner-pro/id6744968300/reviews.md

### 2/5 — It dint work

*2026-05-12*

For some reason it wouldn’t say it was out of tune

### 5/5 — PERFECT

*2025-12-11*

I don’t get these review the app works perfectly fine no virus or ads these lies.

### 1/5 — Ad provider serves up Malvertising

*2025-09-22*

The app should work fine, and I understand the need to compensate developers, but the ad platform they’ve chosen to integrate is suspect.  It pops up full screen unclosable, unstoppable ads to start the app, and the ad I got was malvertising, which was a full screen thing that looked like it was an iOS error message that indicated virus/errors.  If you clicked, took you to a site that tried get you to install free “scanner apps” and such.  Not cool.  Not the app developers doing this intentionally, but maybe select a better ad platform or something?  Boycott bad behavior.

### 1/5 — Virus

*2025-09-21*

This a Trojan virus

## Frequently asked questions about Viola Tuner

### Does Viola Tuner have ads?

Yes, Viola Tuner – XTuner PRO contains advertisements. Users can opt for a premium version without ads through a one-time purchase or subscription.

### How accurate is Viola Tuner?

The app utilizes professional sound recordings and an advanced algorithm for effective recognition of instrument sounds, aiming for precise tuning.

### Can Viola Tuner be used without an internet connection?

Yes, Viola Tuner – XTuner PRO is designed to work offline, allowing you to tune your viola anywhere without needing an internet connection.

### What tuning modes does Viola Tuner offer?

Viola Tuner offers three modes: Auto Tune for automatic tuning, Manual mode for selecting specific notes, and Pro/Chromatic tuner mode for practicing diapason.

### What is the subscription cost for Viola Tuner?

A 1-week subscription is available for $2.99, which includes a 3-day free trial. Users can also purchase a premium version forever.

### What devices is Viola Tuner compatible with?

Viola Tuner is compatible with iPhone, iPad, and iPod devices.

### How often is Viola Tuner updated?

The latest version of Viola Tuner is 1.0.24, and it was last updated on July 15, 2025, indicating regular updates.

### What is the age rating for Viola Tuner?

Viola Tuner has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 3 releases)

### 1.0.24 — 2025-07-15

Overall application improvement.

### 1.0.20 — 2025-06-26

General improvement of the app.

### 1.0 — 2025-06-06

No release notes.

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All apps by NETIGEN Kluzowicz sp. j.: https://appshunter.io/developer/892331873

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*