# OttOrgan

> Play a house organ sample set with MIDI keyboard and pedal on iOS/macOS. (iPhone/iPad app by Markus Sigg.)

- Source: https://appshunter.io/ios/app/ottorgan/id519638462 (this page in markdown: same URL + `.md`)
- Developer: [Markus Sigg](https://appshunter.io/developer/458880634)
- Category: Music
- Price: $9.00 (on sale, was $10.00)
- Rating: 5.00/5 from 3 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.5.6 · 340 MB
- Languages: American English, German (Germany)
- Released: 2012-07-14
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/ottorgan/id519638462/reviews.md

## What is OttOrgan?

OttOrgan lets you play the Ott-Orgel sample set of Christian Datzko on a MIDI keyboard and a MIDI pedal attached to your iOS or macOS device. The Ott organ is a house organ with five ranks at one manual and an attached pedal with a 16' subbass. If you would like to use the sample set with other software, you can get it at http://orgel.datzko.ch/main.EN.html.

For more information, please consult the app support page http://polaron.de/OttOrgan/ , the Napo documentation at http://polaron.de/Napo/ and in particular the Napo user manual at http://polaron.de/Napo/manual .

For hearing sound examples of the app, please visit the support page http://polaron.de/OttOrgan/ .

## Key features

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

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/ottorgan/id519638462/reviews.md

### 5/5 — Superb set

*2021-03-30, version 7.1*

Love this house organ set  and can use it at home for practise without disturbing the neighbours beautiful tone

### 5/5 — what a delightful instrument

*2021-01-04, version 7.1*

Markus Sigg has superb curation skills .I now have downloaded all the instruments he sells as VPO recordings I  was a organist in my teens and early 20,s but have come back to it and use Markus Siggs collection exclusively for my studies ...I am now 64 and have a superb RCO Tutor .The Ott organ has a lovely House organ quality and ideal for study as is the ESMUC  organ

### 5/5 — More Stops!

*2018-08-02*

This Organ App is awesome! It’s very cool how you added the 16’ stop!

Can you please add a 32’ and a 64’ Stop to the pedal for the Updated Version?

### 5/5 — Worth every penny!

*2014-03-26, version 4.0*

I needed a way to practice continuo parts quietly and with an organ, rather than piano, touch. 
The combination of a cheap MIDI keyboard and these excellent samples worked perfectly. 
Excellent product!

## Frequently asked questions about OttOrgan

### What is OttOrgan?

OttOrgan is a paid application that allows you to play the Ott-Orgel sample set on your iOS or macOS device using a MIDI keyboard and pedal. It simulates a house organ with specific ranks and a subbass.

### How much does OttOrgan cost?

OttOrgan is a paid app priced at $9.00. This one-time purchase grants you access to the full functionality of the application.

### What devices does OttOrgan support?

OttOrgan is compatible with a range of Apple devices, including Mac, iPhone, iPad, and iPod. It is designed for users who want to play music on these platforms.

### Is OttOrgan suitable for children?

OttOrgan has an age rating of 4+, making it suitable for younger users. The app focuses on musical instrument simulation.

### How often is OttOrgan updated?

The latest version of OttOrgan is 7.8, last updated on June 13, 2023. This indicates regular maintenance and potential feature additions by the developer.

### Does OttOrgan have ads?

No, OttOrgan does not contain advertisements. As a paid application, it offers an ad-free experience for users.

### Can I use the Ott-Orgel sample set with other software?

Yes, the Ott-Orgel sample set can be obtained separately for use with other software at http://orgel.datzko.ch/main.EN.html. OttOrgan provides a dedicated way to play it on Apple devices.

### Where can I find more information about OttOrgan and its features?

You can find more information on the app's support page at http://polaron.de/OttOrgan/, including sound examples and documentation for Napo at http://polaron.de/Napo/manual.

## Version history (last 5 releases)

### 7.9 — 2026-08-11

Upgraded from Napo 5.17.2 to Napo 5.18.1.

- Bugfix in convolution reverb (delayed late reflections).
- Pitch shifting range increased to ±200ç.
- Loading saved settings is now be done by a short-tap.
- Audiobus updated to version 3.0.15.1.

Plus the changes of Napo 5.18 that you can read about in the Napo version history.

### 7.8 — 2023-06-13

Upgraded to Napo 5.17.2. Fixes dysfunctional windchest volume controls and tremulants as well as breakdowns of the app when the user tries to configure the behaviour of MIDI controllers 64 and 66.

### 7.7 — 2023-04-29

Upgraded from Napo 5.13 to Napo 5.17, which brings temperaments functionality and other changes as detailed in https://polaron.de/Napo/history/index.html#5.17 .

### 7.5 — 2022-01-27

Fixes problems with iOS 15 prewarming.

### 7.4 — 2022-01-22

Bugfix: The stop knob labels in the abstract Console view were incomplete in version 7.3. We are sorry for the inconvenience.

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## More apps by Markus Sigg

- [EagleView - EagleData Viewer](https://appshunter.io/ios/app/eagleview-eagledata-viewer/id458880631)
- [StrandOrgan](https://appshunter.io/ios/app/strandorgan/id488756266)
- [MenzelOrgan](https://appshunter.io/ios/app/menzelorgan/id519045788)
- [PiteaMini](https://appshunter.io/ios/app/piteamini/id545235579)
- [Jeux d'orgues](https://appshunter.io/ios/app/jeux-dorgues/id557697492)

All apps by Markus Sigg: https://appshunter.io/developer/458880634

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*