# Guitarist's Reference vs Polytactus Metronome

The clearest difference is price: Polytactus Metronome at $1.99 against Guitarist's Reference's $19.99. Polytactus Metronome also leads on update cadence (daily vs every 3 weeks). Guitarist's Reference's advantage is device support (4 vs 2) and iOS requirement (12.0 vs 16.0). On ads and in-app purchases there is nothing between them.

Guitarist's Reference costs $19.99 and Polytactus Metronome $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Guitarist's Reference ships an update every 3 weeks, Polytactus Metronome daily. The most recent releases landed on October 17, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Guitarist's Reference | Polytactus Metronome |
| --- | --- | --- |
| Price | $19.99 | **$1.99** |
| Rating | **[4.8 (16 ratings)](https://appshunter.io/ios/app/guitarists-reference/id304048049/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 62.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free | — |
| Size | 79 MB | 5 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [My App Catalog LLC](https://appshunter.io/developer/304048052) | [Jumpei Yamaguchi](https://appshunter.io/developer/6786988624) |

## What reviewers say

### Guitarist's Reference

[App page](https://appshunter.io/ios/app/guitarists-reference/id304048049)

This comprehensive suite offers a vast collection of guitar chords, scales, and arpeggios with clear diagrams and detailed theory. It includes tools for finding chord-scale relationships, exploring alternate tunings, and even a virtual guitar for practice.

**Highlights:** 3000+ guitar chords with diagrams, 42 scale types including modes and pentatonics, Arpeggio finder, 36 alternate tunings, Chord-scale relationship guide, Virtual guitar, Guitar tuner

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Comprehensive guitar reference
- 👍 Intuitive and easy to use
- 💡 Reverse chord finder
- 🚀 Detailed chord, scale, and arpeggio information
- 👍 Great for beginners and advanced players

**What reviewers complain about**

- 🐛 Occasional crashes and freezes
- 🔧 Missing some common chord and scale voicings
- 🔧 Chord playback implementation could be improved
- 🔧 Outdated or lacking support for newer iOS versions
- 🔧 Interface could use a more modern design

**Reported bugs**

- Chord finder not detecting all chord inversions
- Issues with alternate tuning functionality
- Compatibility problems with newer iOS versions

**Requested features**

- Ability to overlay multiple scales
- Customizable chord/scale display options
- Integrated tuner functionality
- Support for more alternate tunings
- Improved chord/scale audio playback


### Polytactus Metronome

[App page](https://appshunter.io/ios/app/polytactus-metronome/id6791481857)

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

**In-app purchases:** none


## Frequently asked questions

### Is Guitarist's Reference free?

Guitarist's Reference costs $19.99, with no in-app purchases.

### Is Polytactus Metronome free?

Polytactus Metronome costs $1.99, with no in-app purchases.

### Do Guitarist's Reference or Polytactus Metronome have ads?

Neither Guitarist's Reference nor Polytactus Metronome shows ads.

### Which is updated more often, Guitarist's Reference or Polytactus Metronome?

Guitarist's Reference ships an update every 3 weeks, and Polytactus Metronome daily. Most recently, Guitarist's Reference was updated on October 17, 2026 and Polytactus Metronome 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.*