# Fretuoso vs Calibre Project

The clearest difference is ads: Calibre Project at none against Fretuoso's shown. Calibre Project also leads on iOS requirement (15.2 vs 17.0). Fretuoso's advantage is update cadence (every 9 days vs every 6 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Fretuoso sells 12 one-off in-app purchases and Calibre Project sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Fretuoso ships an update every 9 days, Calibre Project every 6 weeks. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Fretuoso | Calibre Project |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (954 ratings)](https://appshunter.io/ios/app/fretuoso/id443265532/reviews)** | — |
| Number of ratings | **954** | — |
| Positive reviews | 63.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 82 MB | 102 MB |
| Requires iOS | 17.0 | **15.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | 4+ |
| Developer | [Catloaf Software LLC](https://appshunter.io/developer/316792340) | [Fraction AS](https://appshunter.io/developer/1780522341) |

## What reviewers say

### Fretuoso

[App page](https://appshunter.io/ios/app/fretuoso/id443265532)

Learn note positions on stringed instruments through an engaging game. Supports multiple instruments and offers staff training to improve sheet music reading. Practice specific fret ranges and tunings with adaptive learning.

**Highlights:** Learn note locations on fretboard, Supports 11 string instruments, Staff training for sheet music, Customizable practice modes, Flexible tuning options, Progress tracking and statistics, Adaptive learning engine

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 8-String Guitar | $3.99 | one-time |
| 12-String Guitar | $3.99 | one-time |
| Guitar | $39.90 | one-time |
| Bass Guitar | $39.90 | one-time |
| Banjo | $39.90 | one-time |
| Mandolin | $39.90 | one-time |
| Ukulele | $39.90 | one-time |
| 7-String Guitar | $39.90 | one-time |
| 5-String Bass Guitar | $39.90 | one-time |
| 6-String Bass Guitar | $39.90 | one-time |
| Acoustic Guitar | $39.90 | one-time |
| All Instruments | $89.90 | one-time |

**What reviewers like**

- 👍 Good way to learn the fretboard
- 👍 Great app
- 👍 Helpful learning tool
- 👍 Fun and engaging way to learn
- 👍 Effective for learning notes on the fretboard

**What reviewers complain about**

- 🐛 Random note generator gets stuck
- 🔍 Unclear instructions
- 💰 Paywall for full access
- 📢 Intrusive ads
- 🤔 Fretboard orientation issues

**Reported bugs**

- Restore purchases not working
- Sound not working
- Crashes and freezes
- Incorrect note display
- Syncing issues

**Requested features**

- Allow adjusting fret marker positions
- Add 'play the fret' mode
- Improve randomness of note selection
- Provide more tuning and instrument options
- Add landscape mode support


### Calibre Project

[App page](https://appshunter.io/ios/app/calibre-project/id6738384352)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calibre Learning Kit | $299.99 | one-time |


## Frequently asked questions

### Is Fretuoso free?

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

### Is Calibre Project free?

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

### Do Fretuoso or Calibre Project have ads?

Fretuoso shows ads; Calibre Project does not.

### Which is updated more often, Fretuoso or Calibre Project?

Fretuoso ships an update every 9 days, and Calibre Project every 6 weeks. Most recently, Fretuoso was updated on October 29, 2026 and Calibre Project on October 27, 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.*