# OttOrgan vs Trapezoid

The clearest difference is price: Trapezoid at $1.99 against OttOrgan's $9.00. Trapezoid also leads on update cadence (every 9 days vs every 5 months) and iOS requirement (10.0 vs 12.5.6). OttOrgan's advantage is device support (4 vs 2). On rating, review sentiment, ratings volume and ads there is nothing between them.

OttOrgan costs $9.00 and Trapezoid $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for OttOrgan against 5.0 for Trapezoid. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

OttOrgan ships an update every 5 months, Trapezoid every 9 days. The most recent releases landed on October 17, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | OttOrgan | Trapezoid |
| --- | --- | --- |
| Price | $9.00 | **$1.99** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/ottorgan/id519638462/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/trapezoid-pocket-dulcimer/id1069508662/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Paid | Paid |
| Size | 340 MB | 46 MB |
| Requires iOS | 12.5.6 | **10.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Markus Sigg](https://appshunter.io/developer/458880634) | [Michael Eskin](https://appshunter.io/developer/342739369) |

## What reviewers say

### OttOrgan

[App page](https://appshunter.io/ios/app/ottorgan/id519638462)

This application allows users to play a specific house organ sample set using a MIDI keyboard and pedal on iOS or macOS devices. It provides access to a unique five-rank manual and attached pedal with a 16' subbass.

**Highlights:** Play Ott-Orgel sample set, Connect MIDI keyboard, Connect MIDI pedal, iOS and macOS support, House organ simulation

**In-app purchases:** none


### 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


## Frequently asked questions

### Is OttOrgan free?

OttOrgan costs $9.00, with no in-app purchases.

### Is Trapezoid free?

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

### Which has better reviews, OttOrgan or Trapezoid?

OttOrgan and Trapezoid are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do OttOrgan or Trapezoid have ads?

Neither OttOrgan nor Trapezoid shows ads.

### Which is updated more often, OttOrgan or Trapezoid?

OttOrgan ships an update every 5 months, and Trapezoid every 9 days. Most recently, OttOrgan was updated on October 17, 2026 and Trapezoid on October 4, 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.*