# Chordology vs Cello Map App

The clearest difference is price: Chordology at Free against Cello Map App's $3.99. Chordology also leads on rating (4.4 vs 3.7) and update cadence (every 3 days vs every 3 months). Cello Map App's advantage is in-app purchases (none vs 1) and iOS requirement (15.6 vs 26.0). On review sentiment, ads and device support there is nothing between them.

Chordology is free to download; Cello Map App costs $3.99 up front. Chordology sells 1 one-off in-app purchase. Cello Map App asks for nothing beyond the download.

Chordology holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: Chordology has 231 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 66% and 67% positive.

Chordology ships an update every 3 days, Cello Map App every 3 months. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Chordology | Cello Map App |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.4 (231 ratings)](https://appshunter.io/ios/app/chordology/id691133982/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/cello-map-app/id1529456113/reviews) |
| Number of ratings | **231** | 3 |
| Positive reviews | 65.8% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 142 MB | 170 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greg Raine](https://appshunter.io/developer/1896538832) | [Ellen Fallowfield](https://appshunter.io/developer/1500031017) |

## What reviewers say

### Chordology

[App page](https://appshunter.io/ios/app/chordology/id691133982)

Access hundreds of thousands of chord variations for multiple instruments like guitar, piano, and ukulele. Features a minimalist, fast interface and supports iPhone, iPad, and OSX. Enjoy a completely ad-free experience.

**Highlights:** Multi-instrument chord dictionary, Hundreds of thousands of chords, Thousands of chord variations, Guitar, piano, ukulele support, Minimalist interface, Ad-free

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chordology Pro | $5.99 | one-time |

**What reviewers like**

- 👍 Intuitive and easy to use
- ✨ Clean and minimalist design
- 💡 Great for learning chords
- 🚀 Fast chord lookup
- 🎹 Useful for composition

**What reviewers complain about**

- 👎 Outdated UI on iPad
- 🐛 Voicing mismatch (display vs. sound)
- 🐛 Octave difference (display vs. sound)
- 🐛 Inaccurate chord identification (minor/major)
- 🐛 Non-functional options screen

**Reported bugs**

- Voicing displayed doesn't match played voicing
- Played chord is an octave higher than displayed
- Shows minor chords as major and vice-versa
- iPad version is a stretched iPhone UI
- Options screen is non-functional

**Requested features**

- Ability to hear chords as displayed
- Toggle between numbers and note names
- Color scheme customization
- Add five-string banjo
- Add baritone ukulele


### Cello Map App

[App page](https://appshunter.io/ios/app/cello-map-app/id1529456113)

This app helps cellists and composers find finger positions for specific harmonics and multiphonics. It provides audio examples, notation, and instructional videos to aid in playing and composing.

**Highlights:** Harmonics and multiphonics exploration, Smart search system, Audio examples, Notation display, Instructional videos, Advanced settings for microtonality and microphone choice

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Chordology free?

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

### Is Cello Map App free?

Cello Map App costs $3.99, with no in-app purchases.

### Which has better reviews, Chordology or Cello Map App?

Chordology is rated higher. Chordology averages 4.4 out of 5 from 231 ratings, while Cello Map App averages 3.7 from 3 ratings.

### Do Chordology or Cello Map App have ads?

Neither Chordology nor Cello Map App shows ads.

### Which is updated more often, Chordology or Cello Map App?

Chordology ships an update every 3 days, and Cello Map App every 3 months. Most recently, Chordology was updated on October 15, 2026 and Cello Map App on October 8, 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.*