# Trala vs Cello Key

The clearest difference is review sentiment: Trala at 51% against Cello Key's 0%. Trala also leads on rating (4.7 vs 3.5) and ads (none vs shown). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Trala sells 11 in-app purchases, starting at $9.99 per 7 days and Cello Key sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Trala holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: Trala has 4.9K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 51% of Trala's written reviews are positive against 0% of Cello Key's.

Trala ships an update every 6 weeks, Cello Key every 6 months. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Trala | Cello Key |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (4.9K ratings)](https://appshunter.io/ios/app/trala-learn-violin/id1143205265/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/cello-key/id6449323913/reviews) |
| Number of ratings | **4.9K** | 2 |
| Positive reviews | **50.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 6 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 176 MB | 61 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Learnfield GmbH](https://appshunter.io/developer/1160191689) | [Yuriko Kimura](https://appshunter.io/developer/1437608412) |

## What reviewers say

### Trala

[App page](https://appshunter.io/ios/app/trala-learn-violin/id1143205265)

Learn violin with instant feedback on pitch and rhythm using cutting-edge technology. Access a vast library of songs and lessons taught by world-class violinists, from classical to rock.

**Highlights:** Instant pitch and rhythm feedback, Curriculum by concertmasters and rockstars, Built-in violin tuner, Interactive sheet music library, 500+ songs from various genres, Lessons from Grammy-winning violinists

**Features:** Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| App Only | $9.99 | per 7 days |
| App Only | $19.99 | per month |
| Premium Monthly Subscription | $19.99 | per month |
| Premium Monthly Subscription | $19.99 | per month |
| App + 1 lesson per month | $39.99 | per month |
| App + 2 lessons per month | $79.99 | per month |
| App Only | $119.99 | per year |
| Premium Yearly Subscription | $119.99 | per year |
| App + 4 lessons per month | $159.99 | per month |
| App + 4 hour lessons per month | $279.99 | per month |
| 1 Trial Lesson | $9.99 | one-time |

**What reviewers like**

- 💻 Easy to use
- 🎓 Helpful lessons and instructions
- 🎨 Engaging and interactive
- 🎻 Useful for beginners and experienced players
- 🎯 Accurate pitch detection and feedback

**What reviewers complain about**

- 💰 Expensive subscription model
- 🚫 Limited free access
- 🕰️ Lessons progress too quickly
- 🎼 Sheet music and notation issues
- 🐛 Technical issues and bugs

**Reported bugs**

- Lessons and progress resetting after updates
- Inability to continue past certain lessons or sections
- Inaccurate pitch detection and feedback
- App crashes and freezes during use

**Requested features**

- Ability to adjust tempo and speed of lessons
- More options for practicing with sheet music
- Inclusion of popular and well-known songs
- Integration with other music learning apps or platforms
- Customizable practice modes and settings


### Cello Key

[App page](https://appshunter.io/ios/app/cello-key/id6449323913)

This app provides a simple fingerboard chart for cello learners, helping them identify notes, positions, and fingerings. It's designed for easy reference anywhere, especially useful for sheet music without finger numbers. It's particularly recommended for adult beginners.

**Highlights:** Fingerboard chart for cello, Note identification, Position guidance, Finger number reference, Simple and easy to read layout, Portable reference tool

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Natural Minor Scales Pack | $1.99 | one-time |


## Frequently asked questions

### Is Trala free?

Trala is free to download, with in-app purchases available.

### Is Cello Key free?

Cello Key is free to download, with in-app purchases available.

### Which has better reviews, Trala or Cello Key?

Trala is rated higher. Trala averages 4.7 out of 5 from 4.9K ratings, while Cello Key averages 3.5 from 2 ratings.

### Do Trala or Cello Key have ads?

Cello Key shows ads; Trala does not.

### Which is updated more often, Trala or Cello Key?

Trala ships an update every 6 weeks, and Cello Key every 6 months. Most recently, Trala was updated on October 12, 2026 and Cello Key on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*