Comparison

JAX CHROMATIC vs MIDIPlex

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

Head to head
About

JAX CHROMATIC

This advanced audio processor splits sound into 32 frequency bands for real-time spectral dynamics modification. It enhances sound perception, removes muddiness, and offers a user-friendly interface for creative mixing and mastering.

Highlights
  • 32-band spectral processing
  • Real-time compander per band
  • Analog filter models
  • Latency-free operation
  • Mastering and mixing tool
  • User-friendly interface
Features
Read full description

This is an AudioUnit. AudioUnits (AUv3) require a supporting host application to perform. The main app distributes the embedded unit and allows for testing with random sound samples. The complete manual can be found at: https://midi.digitster.com/CHROMATIC/JAX%20CHROMATIC%20Compander.pdf There is also an introductory video available at: https://www.youtube.com/watch?v=TlEGn_npt4A The JAX Chromatic Compander is an advanced real-time spectral dynamics processor, which splits the audio stream internally into 32 separate, stereophonic, chromatically tuned frequency bands. The parallel bandpass filter bank consists of fast response analog fiter models, producing natural fading sound with no latency. Chromatic means, that each bandpass is adjusted to cover 4 halftones in a musical scale (analog a classic 3rd octave). In difference to a 'Bark' filter, the chromatic bandpass filters are mapped consequently to the musical scale thru the entire frequency range. A bi-directional stereophonic dynamics processor, based on the compander (a combination of an expander and a compressor), is attached to each of the 32 frequency bands and will perform spectral dynamics modification in time with specified attack and release values. The JAX Chromatic Compander can be seen as a unique spectral enhancer, that is able to drastically improve the perception and presence of sound, especially removing all mud. It is mainly recommended to be used as a mastering processor, psycho acoustic loudnes maximizer and creative mixing tool for any kind of wideband audio signals (i.e. complete mixes and all sonically rich audio materials). We use vector processing CPU registers on all supported platforms for keeping the performance as good as possible. There are in sum 64 filters, 64 companders and 64 input- and output mixers performing in parallel thousands of instructions for each single audio sample of the continuous input stream. Usage, on the other side is extremely simple. All parameters are adjusted with ease by just moving fingers over the touchsreen. There is one macro knob for adjusting the compression/expansion amount. We spared out all complicated editing with numerical input and such, making JAX Chromatic Compander a joy to use. Our latest builds are truly 'universal', meaning, the AudioUnit is available on: - MacOS (Catalyst Intel) - MacOS (Silicon M1/M2/M3...) - iOS (iPhone) - iPadOS (iPads) Please note, that the MacOS Catalyst versions may be distributed or sold separately, because the AppStore does not allow to bundle none-silicon apps for the Mac with the iOS apps. Our builds come with latest technology support for all Apple devices. We therefore always develop with currently actual frameworks and compilers.

About

MIDIPlex

Features
Read full description

MotionMIDI transforms your iPhone into a powerful motion-based MIDI controller. Use the built-in motion sensors to control MIDI notes and continuous controller (CC) data through expressive gestures. Connect wirelessly via Bluetooth MIDI or use compatible CoreMIDI connections to perform with your favorite music apps and hardware. Features: • Motion-controlled MIDI performance • Bluetooth MIDI support • MIDI Note Mode • MIDI CC Mode • Real-time gesture control • Adjustable sensitivity and calibration • Presets optimized for popular music apps • Low-latency performance • Clean, performance-focused interface Whether you're creating expressive synthesizer performances, controlling effects, or experimenting with new ways to interact with music, MotionMIDI offers a simple and intuitive way to make movement part of your performance. Compatible with CoreMIDI-enabled apps and hardware that support MIDI input.

Screenshots

JAX CHROMATIC4 screens
MIDIPlex3 screens

Verdict

The call

The clearest difference is price: MIDIPlex at $4.99 against JAX CHROMATIC's $12.99. MIDIPlex also leads on update cadence (every 9 days vs every 14 months). JAX CHROMATIC's advantage is device support (4 vs 2) and iOS requirement (14.0 vs 18.5). On ads and in-app purchases 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 CHROMATIC costs $12.99 and MIDIPlex $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

JAX CHROMATIC ships an update every 14 months, MIDIPlex every 9 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
JAX CHROMATIC versus MIDIPlex: the parameters behind the verdict, then further details
ParameterJAX CHROMATICMIDIPlex
Price$12.99$4.99 — better
Rating4.9 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 14 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS14.0 — better18.5
Further details — not scored
Size23 MB29 MB
Age rating4+4+
DeveloperJens GuellBRADLEY WAYNE MYERS

In-app purchases

None

JAX CHROMATIC

No in-app purchases

None

MIDIPlex

No in-app purchases

Questions

Is JAX CHROMATIC free?
JAX CHROMATIC costs $12.99, with no in-app purchases.
Is MIDIPlex free?
MIDIPlex costs $4.99, with no in-app purchases.
Do JAX CHROMATIC or MIDIPlex have ads?
Neither JAX CHROMATIC nor MIDIPlex shows ads.
Which is updated more often, JAX CHROMATIC or MIDIPlex?
JAX CHROMATIC ships an update every 14 months, and MIDIPlex every 9 days. Most recently, JAX CHROMATIC was updated on October 30, 2026 and MIDIPlex on October 31, 2026.

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