# Harmonium vs OttOrgan

The clearest difference is review sentiment: OttOrgan at 100% against Harmonium's 39%. OttOrgan also leads on rating (5.0 vs 3.0). Harmonium's advantage is price ($0.99 vs $9.00) and update cadence (every 6 weeks vs every 5 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Harmonium costs $0.99 and OttOrgan $9.00 up front. Neither carries in-app purchases, so what you see is what you pay.

OttOrgan holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 39% of Harmonium's written reviews are positive against 100% of OttOrgan's.

Harmonium ships an update every 6 weeks, OttOrgan every 5 months. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Harmonium | OttOrgan |
| --- | --- | --- |
| Price | **$0.99** | $9.00 |
| Rating | [3.0 (3 ratings)](https://appshunter.io/ios/app/harmonium/id301027289/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ottorgan/id519638462/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | 38.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | **Free** | Paid |
| Size | 13 MB | 340 MB |
| Requires iOS | **12.0** | 12.5.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [C.BARATAY](https://appshunter.io/developer/287107572) | [Markus Sigg](https://appshunter.io/developer/458880634) |

## What reviewers say

### Harmonium

[App page](https://appshunter.io/ios/app/harmonium/id301027289)

This app provides a virtual harmonium with customizable tuning for both Indian and Western music styles. It offers two distinct sound flavors and features automatic transposition for playing in any key. Enjoy playing along with your own music library.

**Highlights:** Customizable tuning for Indian and Western scales, Two sound flavors: Traditional Harmonium & Modern Flute Organ, Automatic transposition for playing in any key, Adjustable tuning frequency (380 Hz - 470 Hz), Play along with iPhone/iPad music library, Single or double reed options

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Harmonium free?

Harmonium costs $0.99, with no in-app purchases.

### Is OttOrgan free?

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

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

OttOrgan is rated higher. Harmonium averages 3.0 out of 5 from 3 ratings, while OttOrgan averages 5.0 from 3 ratings.

### Do Harmonium or OttOrgan have ads?

Neither Harmonium nor OttOrgan shows ads.

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

Harmonium ships an update every 6 weeks, and OttOrgan every 5 months. Most recently, Harmonium was updated on October 15, 2026 and OttOrgan on October 16, 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.*