Comparison

JAX MIDI ModulePlayer vs pOus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

JAX MIDI ModulePlayer

This app functions as a General MIDI compatible multi-timbre synthesizer and file player. It can be used as a sound module for external MIDI signals or as an audio unit within compatible host applications. Create and play back standard MIDI files with over 370 instruments and drum sets.

Highlights
  • GM/GS compatible synthesizer
  • Plays standard MIDI files
  • Over 370 instruments and drum sets
  • 16 MIDI channels simultaneously
  • Audio Unit (AUv3) support
  • Standalone host functionality
  • Universal app for Apple devices
Features
Read full description

There is a manual at: https://midi.digitster.com/JAX%20MIDI/JAX%20MIDI%20ModulePlayer.pdf And a demonstration video at: https://youtu.be/DKwRxcfgy8s JAX MIDI Module & Player can be used as a GM/GS (General MIDI) compatible multi-timbre synthesizer for playing live or as a file player. It is usable as a sound module for external MIDI signals and as audio unit for usage in any host application, which supports Apples AUv3 format. With JAX MIDI Module & Player you can load available standard MIDI files and just play them back. It has inbuilt a fully featured GM/GS synthesizer with over 370 different instruments and drum sets, which is also playable in realtime on 16 MIDI channels simultaneously. The module works like the classic external hardware modules of the late 90s. If used as an audio unit, the MIDI stream is passed thru, so that other apps (like synthesizers and drum machines) can profit from the file playback. Internal sound generation can muted with the main volume slider. Important GM MIDI controllers are supported and also displayed for overview. The playing state of all channels is displayed in realtime. For JAX MIDI Module & Player, you may create your own MIDI files with notes with any external MIDI editor that can create standard MIDI files format 0 or 1, with controllers and tempo changes and all and then play back thru it with the internal or any external instrumentation. AudioUnits (AUv3) require a supporting host application to perform. But our app is able to perform as a standalone host for the embedded unit and provide basic Core MIDI functionality for communicating outside the sandbox. This build is truly 'universal', meaning, the unit is available for: - MacOS (Silicon M1) - iOS (iPhone) - iPadOS (iPads) Note: We now will separate the native macOS release (Mac Catalyst) from the iOS universal release, because native macOS releases need special optimizations. There also will be different prices for the native macOS apps. Making AUv3 technology available across all devices (for usage with GarageBand, Logic Pro X, MainStage 3 on the Mac), is quite a challenge. And we have chosen to deliver the releases across all devices instead of asking multiple times for money. Our builds come with latest technology support for all Apple devices (at the point of release). We therefore always develop with latest Apple frameworks and compilers. But we try to keep the compatibility at minimum requirements as far as even possible. Especially the latest M1/2/3 and cross platform optimizations forced us to drop all the legacy device support (below iOS 14). This is also true for all our older apps, which will be updated step by step to reflect the latest technologies.

About

pOus

This app emulates analog drum machine bass drums with adjustable tuning and decay. It offers MIDI OUT functionality for envelope follower data and a scale mode for playing musical scales. Designed for musicians using AUv3 hosts.

Highlights
  • BassDrum emulation
  • Adjustable tune and decay
  • MIDI OUT envelope follower
  • Scale mode for musical notes
  • AUv3 instrument
  • MIDI CC routing
Read full description

Concept: The app is an AUv3 instrument that emulates the so-called “BassDrum” of analog drum machine. In addition it features MIDI OUT functionality of Envelop Follower, that is, the user can send out this instrument's unique envelop via midi CC for modulating external plugins. Also there is "scale mode" where the user can play "pOus" with musical scale like Bass. System Requirements: AUv3 host that has a flexible capability of MIDI routing (AUM, apeMatrix, etc) Usage: There are 9 sliders & one button. Tune: BassDrum’s fundamental frequency (30hz - 160hz). text-editable. Decay: determines its duration. Amp: audio’s decibel representation. MIDI OUT: whether the functionality of envelop follower is turned on or off (default: off) MIDI Gain: gain amount of MIDI out Offset: balances the output parameter’s value Channel: determines MIDI channel MIDI CC: determines the destination MIDI CC number. text-editable Scale Mode: This is a sort of Bass mode, that is, it can play musical scale in response to incoming MIDI notes. Button: triggers the instrument. Recommended Scheme: drum machine (MIDI out) -> “pOus” -> audio effect (compressor, saturator etc)

Screenshots

JAX MIDI ModulePlayer4 screens
pOus2 screens

Verdict

The call

The clearest difference is price: pOus at $2.99 against JAX MIDI ModulePlayer's $29.99. pOus also leads on rating (5.0 vs 4.2) and iOS requirement (12.0 vs 14.0). JAX MIDI ModulePlayer's advantage is ratings volume (5 vs 1). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

JAX MIDI ModulePlayer costs $29.99 and pOus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

pOus holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: JAX MIDI ModulePlayer has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

JAX MIDI ModulePlayer ships an update every 6 months, pOus every 4 months. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
JAX MIDI ModulePlayer versus pOus: the parameters behind the verdict, then further details
ParameterJAX MIDI ModulePlayerpOus
Price$29.99$2.99 — better
Rating4.2 (5 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings5 — better1
Update frequencyEvery 6 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS14.012.0 — better
Further details — not scored
Size24 MB15 MB
Age rating4+4+
DeveloperJens GuellSatoshi Kajii

Customer experience

JAX MIDI ModulePlayer

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

pOus

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

JAX MIDI ModulePlayer

No in-app purchases

None

pOus

No in-app purchases

Questions

Is JAX MIDI ModulePlayer free?
JAX MIDI ModulePlayer costs $29.99, with no in-app purchases.
Is pOus free?
pOus costs $2.99, with no in-app purchases.
Which has better reviews, JAX MIDI ModulePlayer or pOus?
pOus is rated higher. JAX MIDI ModulePlayer averages 4.2 out of 5 from 5 ratings, while pOus averages 5.0 from 1 ratings.
Do JAX MIDI ModulePlayer or pOus have ads?
Neither JAX MIDI ModulePlayer nor pOus shows ads.
Which is updated more often, JAX MIDI ModulePlayer or pOus?
JAX MIDI ModulePlayer ships an update every 6 months, and pOus every 4 months. Most recently, JAX MIDI ModulePlayer was updated on October 12, 2026 and pOus on October 8, 2026.

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