# Trapezoid vs Tune Library

The clearest difference is rating: Trapezoid at 5.0 against Tune Library's 3.8. Trapezoid also leads on update cadence (every 9 days vs every 8 months) and price ($1.99 vs $2.99). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

Trapezoid costs $1.99 and Tune Library $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Trapezoid holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Trapezoid ships an update every 9 days, Tune Library every 8 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Trapezoid | Tune Library |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/trapezoid-pocket-dulcimer/id1069508662/reviews)** | [3.8 (4 ratings)](https://appshunter.io/ios/app/tune-library-mnemosyne/id1558592429/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 8 months |
| Monetization | Paid | Paid |
| Size | 46 MB | 36 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Eskin](https://appshunter.io/developer/342739369) | [Robert Patt-Corner](https://appshunter.io/developer/1558592623) |

## What reviewers say

### Trapezoid

[App page](https://appshunter.io/ios/app/trapezoid-pocket-dulcimer/id1069508662)

This virtual instrument accurately simulates the sound and playability of a hammered dulcimer. It offers multiple tuning options, drag roll effects, and MIDI compatibility for a realistic musical experience. Designed for both beginners and experienced players, it fits right in your pocket.

**Highlights:** Authentic hammered dulcimer sound, Standard and Michigan tunings, Drag roll effects, MIDI keyboard compatibility, Velocity sensitive MIDI input, Note name display

**Features:** Vision Pro support

**In-app purchases:** none


### Tune Library

[App page](https://appshunter.io/ios/app/tune-library-mnemosyne/id1558592429)

Easily access and recall your entire music repertoire during practice or jam sessions. Quickly find tunes by rhythm, mode, key, or name, and get reminders on how they start.

**Highlights:** Import tunes from various sites, Organize by rhythm, mode, and key, Search tunes by name, Recall tune beginnings, Find tunes in specific tunings

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Trapezoid free?

Trapezoid costs $1.99, with no in-app purchases.

### Is Tune Library free?

Tune Library costs $2.99, with no in-app purchases.

### Which has better reviews, Trapezoid or Tune Library?

Trapezoid is rated higher. Trapezoid averages 5.0 out of 5 from 2 ratings, while Tune Library averages 3.8 from 4 ratings.

### Do Trapezoid or Tune Library have ads?

Neither Trapezoid nor Tune Library shows ads.

### Which is updated more often, Trapezoid or Tune Library?

Trapezoid ships an update every 9 days, and Tune Library every 8 months. Most recently, Trapezoid was updated on November 2, 2026 and Tune Library on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*