# Viola Tuner Professional — Strings Tuner

> Professional viola tuner app with Hz frequency display and calibration options. (iPhone/iPad app by Pedro Daniel Macalupu Cumpen.)

- Source: https://appshunter.io/ios/app/viola-tuner-professional/id806811415 (this page in markdown: same URL + `.md`)
- Developer: [Pedro Daniel Macalupu Cumpen](https://appshunter.io/developer/492172409)
- Category: Music, Utilities
- Price: $14.99 with in-app purchases
- Rating: 3.90/5 from 9 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 7 MB
- Languages: American English, Arabic, Armenian, Catalan, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 23 more
- Released: 2014-03-21
- Data updated: 2026-08-27
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/viola-tuner-professional/id806811415/reviews.md

## What is Viola Tuner Professional?

Tune your viola instantly with precision and ease!
Optimal for beginners, intermediate and advanced musicians!

· The most accurate - displays the exact sound frequency in Hz.
· Calibration for A: 392Hz, 415Hz, 432Hz, 440Hz, 441Hz, 442Hz, 443Hz, 444Hz, 466Hz. 
· Instant load and fastest tuning! - Optimized for latest devices.
· Highest responsiveness and sensitivity.
· Intuitive user interface with LED tuning indicator.
· Visual indicators - tuned string lights up.
· Universal app - works with iPhone, iPad and iPod touch.
· Advanced settings (A4 calibration, Mic sensitivity, Sound notifications) and Tuning fork! (as in-app purchases)

What our users say:

"Does what it promises - Very useful app." 

"This app makes tuning so easy!" 

"By far the greatest and most accurate viola tuning app. Play the string, read its chart and you know whether you're in tune."

"Amazing! Outstanding, well spent money!

"All violists should have this app!"

"It's very useful for me! Thank  you!"

"Excellent app"

"Very convenient software. Suitable for any skill!"

--- 

Please make sure to allow microphone access to this app when prompted. 
Check it under Settings>Privacy>Microphone. Thank you.

--- 

Got ideas? Questions? 

Please send us your feedback through our site or to feedback@daikyoujulabs.com

## Key features

- Precise frequency display in Hz
- Multiple calibration options for A string
- Instant loading and fast tuning
- Intuitive UI with LED indicator
- Visual indicators for tuned strings
- Advanced settings and tuning fork (in-app purchase)

## Pricing and in-app purchases

Base price: $14.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Tuning Fork | Free | one-time |
| Settings | $1.99 | one-time |


## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/viola-tuner-professional/id806811415/reviews.md

### 1/5 — Non adapté à un alto

*2017-11-18*

Les fréquences de référence ne sont pas celles d'un alto. N'ACHETEZ PAS !!!

### 1/5 — 什么软件，四根弦不亮，赶紧退钱给我

*2017-05-23*

什么软件，四根弦不亮，赶紧退钱给我

### 5/5 — Não sei como usar

*2017-02-17*

Será que alguém pode me ajudar a utilizar este App?
Somebody can teach me how to use this APP?

Thank you very much for your prompt attention and care with us, customers.
I have reconsidered the stars.
Thank you again
Rita

### 5/5 — 이게 뭐라고

*2016-05-17*

이렇게 좋은건뎈ㅋㅋㅋㅋ

### 1/5 — Grave erreur

*2015-06-03*

C'est une application catastrophique qui ne fonctionne pas. Alors surtout, ne l'achetez pas. Passez votre chemin et télécharger autre chose, gratuitement.

### 1/5 — Nicht kaufen

*2015-02-01*

...ist das Geld nicht wert!!

### 1/5 — Abzocke

*2015-01-23*

Funktioniert überhaupt nicht! Bitte nicht kaufen!

### 1/5 — Auf keinen Fall kaufen - macht gar nichts!

*2014-12-16*

Bis auf die Frequenzen der Bratsche-Saiten in MHz in Textform hat die App nicht zu bieten.

Auf keinen Fall kaufen - absolute Verarschung und Abzocke hoch drei.

### 1/5 — Did not work... Needs instructions

*2014-05-14*

Yellow button indicating ready to receive input did not change when instrument played. Are there instructions? Seems simple to use, but not working for us

## Frequently asked questions about Viola Tuner Professional

### What is the price of Viola Tuner Professional?

Viola Tuner Professional costs $6.99. This is a one-time purchase for the full application.

### Does Viola Tuner Professional have ads?

No, Viola Tuner Professional is ad-free. Users can enjoy an uninterrupted tuning experience.

### What devices does Viola Tuner Professional support?

Viola Tuner Professional is a universal app that works on iPhone, iPad, and iPod touch devices.

### How accurate is Viola Tuner Professional?

The app displays the exact sound frequency in Hz, offering high accuracy. Users praise its precision and responsiveness.

### Can I calibrate the A string to different frequencies?

Yes, Viola Tuner Professional allows calibration for various A string frequencies, including 392Hz, 415Hz, 432Hz, 440Hz, 441Hz, 442Hz, 443Hz, 444Hz, and 466Hz.

### What are the in-app purchases for Viola Tuner Professional?

In-app purchases for Viola Tuner Professional include advanced settings such as A4 calibration, microphone sensitivity adjustments, sound notifications, and a tuning fork.

### How often is Viola Tuner Professional updated?

The latest version is 3.9.9, and it was last updated on May 11, 2026. Updates ensure continued compatibility and performance improvements.

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

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

## Version history (last 5 releases)

### 3.9.9 — 2026-05-11

· Optimization for the iPhone 17 Pro Max, iPad Mini and latest iPads.
· A4 Calibration, Tuning fork and Settings (as In-App Purchases).
· Performance improvements and bug fixes

### 3.9.8 — 2025-10-24

· Optimization for the iPhone 17 Pro Max, iPad Mini and latest iPads.
· A4 Calibration, Tuning fork and Settings (as In-App Purchases).
· Performance improvements and bug fixes

### 3.9.7 — 2025-10-15

· Optimization for the iPhone 17 Pro Max, iPad Mini and latest iPads.
· A4 Calibration, Tuning fork and Settings (as In-App Purchases).
· Performance improvements and bug fixes

### 3.9.6 — 2025-06-25

· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads.
· A4 Calibration, Tuning fork and Settings (as In-App Purchases).
· Performance improvements and bug fixes

### 3.9.5 — 2024-11-03

· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads.
· A4 Calibration, Tuning fork and Settings (as In-App Purchases).
· Performance improvements

## Apps similar to Viola Tuner Professional

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Pitch Pro Tuner & Metronome](https://appshunter.io/ios/app/pitch-pro-tuner-and-metronome/id1169667039) | 4.6 (2,682) | Free | Music |
| [Metronome Tuner \| Practice+](https://appshunter.io/ios/app/metronome-tuner-practice-plus/id858142974) | 4.4 (2,812) | Free | Music |
| [Pitched Tuner - Tuning App](https://appshunter.io/ios/app/pitched-tuner-tuning-app/id1457541750) | 4.6 (5,144) | Free | Music |
| [Metronome+](https://appshunter.io/ios/app/metronome-plus/id434136233) | 4.5 (1,199) | Free | Music |
| [TonalEnergy Tuner & Metronome](https://appshunter.io/ios/app/tonalenergy-tuner-and-metronome/id497716362) | 4.8 (57,709) | $6.99 | Music |
| [Tuner T1](https://appshunter.io/ios/app/tuner-t1/id453056916) | 4.5 (10,205) | Free | Music |

## More apps by Pedro Daniel Macalupu Cumpen

- [Acoustic Guitar Tuner Basic](https://appshunter.io/ios/app/acoustic-guitar-tuner-basic/id588151563)
- [Acoustic Guitar Tuner Pro](https://appshunter.io/ios/app/acoustic-guitar-tuner-pro/id588152864)
- [Violin Tuner Professional](https://appshunter.io/ios/app/violin-tuner-professional/id802792057)
- [Cello Tuner Professional](https://appshunter.io/ios/app/cello-tuner-professional/id807752194)
- [Ukulele Tuner Pro and Chords](https://appshunter.io/ios/app/ukulele-tuner-pro-and-chords/id815791310)

All apps by Pedro Daniel Macalupu Cumpen: https://appshunter.io/developer/492172409

## Related topics

[viola tuner professional](https://appshunter.io/ios/topics/viola-tuner-professional) · [alto professional](https://appshunter.io/ios/topics/alto-professional)

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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 2026-08-27.*