Comparison

Jasuto vs JAX MIDI ModulePlayer

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

Head to head
About

Jasuto

Create unique sounds and sequences by visually constructing your own synthesizers and effects. Features a powerful sampler for recording, editing, and drawing new samples. Control sound through node positioning and connections, with flexible automation and multi-touch control.

Highlights
  • Visual modular synth construction
  • Multi-touch control surface
  • Fully-featured sampler
  • Node-based sound control
  • 75+ built-in modules
  • Audiobus and OSC/MIDI support
Features
Read full description

[ACCOLADES] - Featured in Apple's staff favorites! - Reviewed in Computer Music magazine and received a 9/10! [DESCRIPTION] Jasuto is the worlds first (and most powerful) modular synthesizer for the iDevices. Jasuto allows you to visually construct your own synths/effects, and use them to make sequences all on your device! With the addition of a fully-featured sampler you can now record/resample/edit, and even create entirely new samples by drawing right in the app. Jasuto uses the relative position of nodes and their connections to control the sound. So the scene not only represents the synthesis structure, but also a custom multi-touch control surface. Motion can be recorded per node giving you rich, flexible automation. Connections can be created automatically by simply dragging nodes around, or manually. Each wire can be double-tapped to allow even more control of each connection. Jasuto comes installed with 75+ modules as well as 200+ pre-loaded scenes and samples. Each of the modules have been hand-optimized for your device's CPU, allowing you to create extremely complex scenes. [NOTABLE FEATURES] - Anti-aliased oscillators with hard-sync, FM, PWM, PM - Analog style filters (ap, lp, hp, bp, ladder emulation) - Signal control (compressor, limiter, gate, follower) - Zoomable sampler editor with several loop modes (normal, 1 shot, ping, granular) - ADSR envelope editor - Multipage/octave sequencer - Tape style analog delay - Reverb, phaser, several waveshapers - Resample/record the current playback - Audio copy via the pasteboard - Incoming OSC and MIDI for notes and CC's - Audiobus support (input, effect & output source) - Completely compatible with iOS7 - Updated UI graphics - Universal device and Retina support - A shiny new manual - Added background audio support - Low latency audio (256 samples) - Sample sharing through SoundCloud - Dropbox syncing of samples/scenes - High Fidelity (Hi-Fi) Audio [WEBSITE] http://www.jasuto.com

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.

Screenshots

Jasuto4 screens
JAX MIDI ModulePlayer4 screens

Verdict

The call

The clearest difference is price: Jasuto at $4.99 against JAX MIDI ModulePlayer's $29.99. Jasuto also leads on review sentiment (80% vs 50%) and ratings volume (38 vs 5). On rating, 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

Jasuto costs $4.99 and JAX MIDI ModulePlayer $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.1 for Jasuto against 4.2 for JAX MIDI ModulePlayer. That said, the two scores are not equally well evidenced: Jasuto has 38 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 80% of Jasuto's written reviews are positive against 50% of JAX MIDI ModulePlayer's.

UpkeepUpdate frequency

Jasuto ships an update every 3 months, JAX MIDI ModulePlayer every 6 months. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

Scorecard5 real differences · 5 level
Jasuto versus JAX MIDI ModulePlayer: the parameters behind the verdict, then further details
ParameterJasutoJAX MIDI ModulePlayer
Price$4.99 — better$29.99
Rating4.1 (38 ratings)4.2 (5 ratings) — better
Positive reviews80.4% of reviews — better50.0% of reviews
Number of ratings38 — better5
Update frequencyEvery 3 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS8.0 — better14.0
Further details — not scored
Size51 MB24 MB
Age rating4+4+
DeveloperChristopher WolfeJens Guell

Customer experience

Jasuto

All ratings38 ratings
Positive73.7%
Neutral7.9%
Negative18.4%
Written reviews51 reviews
Positive80.4%
Neutral3.9%
Negative15.7%

JAX MIDI ModulePlayer

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

Bugs and requests

Jasuto

Reported bugs

12 issues
  • Privacy warning on manual
  • Not working on iPhone
  • No delete command in File menu
  • Crashing when editing value fields
  • Information button not working
Show 7 more
  • Odd wiring issues sometimes
  • Sample playback tempo issues
  • Crashing on older iOS versions
  • App does not open
  • Audiobus not working
  • Update crashes on iTouch 3.1.2
  • Crashes after splash screen on iPod touch OS 3.1.3

Requested features

19 requests
  • AUv3 effect/instrument version
  • Access to file browser
  • Tutorial videos
  • Dark mode option
  • Advanced analytics dashboard
Show 14 more
  • Add delete command in File menu
  • Fix crashing when editing value fields
  • Fix Information button
  • Allow entering/editing file information
  • Add Core MIDI support
  • Increase recording length
  • Increase sequencing length
  • Improve developer communication
  • Improve playback through bottom speaker
  • Add complete manual
  • Add automatic connecting feature as an option
  • Allow listening to samples before loading
  • Add more sophisticated controller modules
  • Create custom controllers

JAX MIDI ModulePlayer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Jasuto

No in-app purchases

None

JAX MIDI ModulePlayer

No in-app purchases

Questions

Is Jasuto free?
Jasuto costs $4.99, with no in-app purchases.
Is JAX MIDI ModulePlayer free?
JAX MIDI ModulePlayer costs $29.99, with no in-app purchases.
Which has better reviews, Jasuto or JAX MIDI ModulePlayer?
JAX MIDI ModulePlayer is rated higher. Jasuto averages 4.1 out of 5 from 38 ratings, while JAX MIDI ModulePlayer averages 4.2 from 5 ratings.
Do Jasuto or JAX MIDI ModulePlayer have ads?
Neither Jasuto nor JAX MIDI ModulePlayer shows ads.
Which is updated more often, Jasuto or JAX MIDI ModulePlayer?
Jasuto ships an update every 3 months, and JAX MIDI ModulePlayer every 6 months. Most recently, Jasuto was updated on November 1, 2026 and JAX MIDI ModulePlayer on October 28, 2026.

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