# Fretuoso vs Engineering Calculator

The clearest difference is review sentiment: Fretuoso at 62% against Engineering Calculator's 0%. Fretuoso also leads on price (Free vs $1.99) and rating (4.6 vs 1.0). Engineering Calculator's advantage is in-app purchases (none vs 12) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Fretuoso is free to download; Engineering Calculator costs $1.99 up front. Fretuoso sells 12 one-off in-app purchases. Engineering Calculator asks for nothing beyond the download.

Fretuoso holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Fretuoso has 953 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 62% of Fretuoso's written reviews are positive against 0% of Engineering Calculator's.

Fretuoso ships an update every 11 days, Engineering Calculator every 30 months. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Fretuoso | Engineering Calculator |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.6 (953 ratings)](https://appshunter.io/ios/app/fretuoso/id443265532/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/engineering-calculator/id1297957037/reviews) |
| Number of ratings | **953** | 1 |
| Positive reviews | **61.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 30 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 82 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Catloaf Software LLC](https://appshunter.io/developer/316792340) | [loay setrak](https://appshunter.io/developer/923932983) |

## 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

**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


### Engineering Calculator

[App page](https://appshunter.io/ios/app/engineering-calculator/id1297957037)

This application provides a comprehensive suite of 59 engineering calculators across civil, electrical, and mechanical disciplines. It includes formulas and descriptions for each calculator, along with convenient copy and clear functions.

**Highlights:** 59 engineering calculators, Civil, Electrical, Mechanical categories, Formulas included for each calculator, Descriptions for each calculator, Copy and clear button functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Fretuoso free?

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

### Is Engineering Calculator free?

Engineering Calculator costs $1.99, with no in-app purchases.

### Which has better reviews, Fretuoso or Engineering Calculator?

Fretuoso is rated higher. Fretuoso averages 4.6 out of 5 from 953 ratings, while Engineering Calculator averages 1.0 from 1 ratings.

### Do Fretuoso or Engineering Calculator have ads?

Fretuoso shows ads; Engineering Calculator does not.

### Which is updated more often, Fretuoso or Engineering Calculator?

Fretuoso ships an update every 11 days, and Engineering Calculator every 30 months. Most recently, Fretuoso was updated on September 23, 2026 and Engineering Calculator on September 9, 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.*