# Cello Tuner Professional — Strings Tuner

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

- Source: https://appshunter.io/ios/app/cello-tuner-professional/id807752194 (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: 3.70/5 from 24 App Store ratings · 32 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: 2014-03-20
- Data updated: 2026-09-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/cello-tuner-professional/id807752194/reviews.md

## What is Cello Tuner Professional?

Tune your cello 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 cello tuning app. Play the string, read its chart and you know whether you're in tune."

"Amazing! Outstanding, well spent money!

"All cellists 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

- Instant and fast tuning
- Accurate frequency display in Hz
- Multiple calibration options
- Intuitive LED tuning indicator
- Visual tuned string indicator
- Advanced settings and tuning fork (in-app purchase)

## Pricing and in-app purchases

Base price: $14.99.

**One-time purchases**

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


## Recent user reviews (10 of 32)

All indexed reviews: https://appshunter.io/ios/app/cello-tuner-professional/id807752194/reviews.md

### 1/5 — Arnaque

*2024-12-03*

Aucun intérêt 
Donné uniquement la hauteur en hertz et avec très peu de précision

### 1/5 — It doesn’t work

*2023-03-23*

It doesn't work. It doesn't make a signal. Does not switch between modes.

### 1/5 — Rückgabe

*2021-10-29*

Wenn es ein Rückgaberecht für Apps gäbe wäre, würde ich dies App zurückgeben!

### 5/5 — 정말 좋아요

*2021-01-01*

정말정말 좋아요

### 1/5 — App not working at all. I have used it many times and suddenly the whole app has stopped

*2020-09-17*

The whole app has packed up and stopped working. It has worked beautifully for me before and today the basic and the pro apps do not work at all. They don’t even register that I am playing a note. Why?

### 4/5 — 还可以

*2018-09-23*

还可以吧

### 3/5 — Optimism

*2018-09-14*

Noticed they changed the look of the cello graphic which is pretty cool. At first I felt I payed an unnecessary amount of money to unlock the app’s full potential and truthfully, I’m still feeling that way for the most part. The app’s tuning fork only goes cello octaves for open strings. For some people it’s easier to listen to a higher pitch to tune as well as a lower pitch to fine tune. But since this company shows signs of updates, it makes me optimistic about my purchase. 

I would like to be able to play music over Bluetooth while keeping the app open on my phone to see the hurtz of my other notes. Music stops playing when you open the app. Hope that’s changeable in terms of mic and audio playing dilemmas for app developers (because I don’t know how any of that works but I really just wanna keep the app open while music also plays??? You feel me???) Anyway, and please add pitch option for tuning fork.

 Looking forward to see how this app evolves and makes it worth the purchase. (Even if that means having to purchase so suggested updates.)

### 5/5 — Awesome

*2018-09-11*

Easy to use. Works well.

### 1/5 — 不好

*2018-09-09*

一点也不好用

### 5/5 — C’est tout à fait ce qu’il me faut.

*2018-07-26*

Parfait

## Frequently asked questions about Cello Tuner Professional

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

Cello Tuner Professional is a paid app, priced at $9.99. This one-time purchase grants you access to the full application features.

### Does Cello Tuner Professional have ads?

No, Cello Tuner Professional is ad-free. Users can enjoy a seamless tuning experience without any advertisements interrupting their practice.

### What devices does Cello Tuner Professional support?

Cello Tuner Professional is a universal app that works on iPhone, iPad, and iPod touch devices. It is optimized for the latest devices.

### How accurate is Cello Tuner Professional?

The app is designed for precision, displaying the exact sound frequency in Hz. Users have praised its accuracy, with one review stating it's 'by far the greatest and most accurate cello tuning app'.

### Can I customize the tuning calibration in Cello Tuner Professional?

Yes, Cello Tuner Professional offers calibration for various Hz frequencies, including A: 392Hz, 415Hz, 432Hz, 440Hz, 441Hz, 442Hz, 443Hz, 444Hz, and 466Hz. Advanced settings allow for further calibration.

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

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

### How often is Cello Tuner Professional updated?

The latest version of Cello Tuner Professional is 3.9.8, last updated on October 24, 2025. This indicates regular updates to ensure optimal performance and compatibility.

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

Cello Tuner Professional has an age rating of 4+. This makes it suitable for a wide range of users, including younger musicians.

## 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 — 2025-10-16

· 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 Cello Tuner Professional

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Metronome Tuner \| Practice+](https://appshunter.io/ios/app/metronome-tuner-practice-plus/id858142974) | 4.4 (2,812) | Free | Music |
| [Tuner & Metronome -Soundcorset](https://appshunter.io/ios/app/tuner-and-metronome-soundcorset/id918055824) | 4.2 (997) | Free | Music |
| [Metronome+](https://appshunter.io/ios/app/metronome-plus/id434136233) | 4.5 (1,199) | Free | Music |
| [Tuner T1](https://appshunter.io/ios/app/tuner-t1/id453056916) | 4.5 (10,205) | Free | Music |
| [Pano Tuner Lite](https://appshunter.io/ios/app/pano-tuner-lite/id449780743) | 4.7 (7,639) | Free | Music |
| [TonalEnergy Tuner & Metronome](https://appshunter.io/ios/app/tonalenergy-tuner-and-metronome/id497716362) | 4.8 (57,709) | $6.99 | 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)
- [Viola Tuner Professional](https://appshunter.io/ios/app/viola-tuner-professional/id806811415)
- [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

[cello tuner professional](https://appshunter.io/ios/topics/cello-tuner-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 2026-09-01.*