# OttOrgan vs JAX SR

The clearest difference is update cadence: JAX SR at every 4 weeks against OttOrgan's every 5 months. JAX SR also leads on price ($6.99 vs $9.00). OttOrgan's advantage is ratings volume (3 vs 1) and iOS requirement (12.5.6 vs 14.0). On rating, ads, in-app purchases and monetization model there is nothing between them.

OttOrgan costs $9.00 and JAX SR $6.99 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 JAX SR. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

OttOrgan ships an update every 5 months, JAX SR every 4 weeks. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | OttOrgan | JAX SR |
| --- | --- | --- |
| Price | $9.00 | **$6.99** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/ottorgan/id519638462/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/jax-sr-phaser/id1636821536/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Monetization | Paid | Paid |
| Size | 340 MB | 21 MB |
| Requires iOS | **12.5.6** | 14.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Markus Sigg](https://appshunter.io/developer/458880634) | [Jens Guell](https://appshunter.io/developer/1195004865) |

## 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


### JAX SR

[App page](https://appshunter.io/ios/app/jax-sr-phaser/id1636821536)

This audio effect app allows selective frequency range processing for modulation effects. It offers a classic phaser with MIDI control and dynamic mix adjustment, preventing negative side effects from full-range processing. It requires a host application to function.

**Highlights:** Selective frequency range processing, Classic phaser modulation, Optional MIDI control, Dynamic mix adjustment, Universal app for Apple devices

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OttOrgan free?

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

### Is JAX SR free?

JAX SR costs $6.99, with no in-app purchases.

### Which has better reviews, OttOrgan or JAX SR?

OttOrgan and JAX SR are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do OttOrgan or JAX SR have ads?

Neither OttOrgan nor JAX SR shows ads.

### Which is updated more often, OttOrgan or JAX SR?

OttOrgan ships an update every 5 months, and JAX SR every 4 weeks. Most recently, OttOrgan was updated on October 26, 2026 and JAX SR on October 19, 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.*