# Guitar Notation Pro vs ChordDetectorInator

The clearest difference is price: ChordDetectorInator at Free against Guitar Notation Pro's $149.00. ChordDetectorInator also leads on rating (5.0 vs 4.1). Guitar Notation Pro's advantage is in-app purchases (none vs 1) and update cadence (every 3 months vs every 10 months). On ads and device support there is nothing between them.

ChordDetectorInator is free to download; Guitar Notation Pro costs $149.00 up front. ChordDetectorInator sells 1 one-off in-app purchase. Guitar Notation Pro asks for nothing beyond the download.

ChordDetectorInator holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Guitar Notation Pro has 24 ratings behind it against 2, so its average is the more settled of the two.

Guitar Notation Pro ships an update every 3 months, ChordDetectorInator every 10 months. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Guitar Notation Pro | ChordDetectorInator |
| --- | --- | --- |
| Price | $149.00 | **Free** |
| Rating | [4.1 (24 ratings)](https://appshunter.io/ios/app/guitar-notation-pro/id1144465456/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chorddetectorinator/id6748886169/reviews)** |
| Number of ratings | **24** | 2 |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 153 MB | 6 MB |
| Requires iOS | **13** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [嵩 张](https://appshunter.io/developer/1091921941) | [Robert J Sarvis Jr](https://appshunter.io/developer/1531648349) |

## What reviewers say

### Guitar Notation Pro

[App page](https://appshunter.io/ios/app/guitar-notation-pro/id1144465456)

Compose, edit, and playback guitar sheet music scores with this powerful notation app. Supports multi-track tabs, chord charts, and various instruments. Export your compositions in industry-standard formats.

**Highlights:** Compose and edit sheet music, Multi-track tab support, Chord chart configuration, High-quality playback, Export to MusicXML, MIDI, PNG, PDF, Supports up to 8 staff

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ChordDetectorInator

[App page](https://appshunter.io/ios/app/chorddetectorinator/id6748886169)

Instantly identify musical chords in real-time from any instrument. This app requires no setup and is perfect for musicians of all levels learning songs, transcribing, or needing quick chord references during performances. Enjoy privacy with local audio processing.

**Highlights:** Real-time chord detection, Works with any instrument, No setup or musical knowledge needed, Instant chord display, Local audio processing for privacy, Free trial with optional unlimited access

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Time Limit | $2.99 | one-time |


## Frequently asked questions

### Is Guitar Notation Pro free?

Guitar Notation Pro costs $149.00, with no in-app purchases.

### Is ChordDetectorInator free?

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

### Which has better reviews, Guitar Notation Pro or ChordDetectorInator?

ChordDetectorInator is rated higher. Guitar Notation Pro averages 4.1 out of 5 from 24 ratings, while ChordDetectorInator averages 5.0 from 2 ratings.

### Do Guitar Notation Pro or ChordDetectorInator have ads?

Neither Guitar Notation Pro nor ChordDetectorInator shows ads.

### Which is updated more often, Guitar Notation Pro or ChordDetectorInator?

Guitar Notation Pro ships an update every 3 months, and ChordDetectorInator every 10 months. Most recently, Guitar Notation Pro was updated on October 5, 2026 and ChordDetectorInator on September 30, 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.*