Comparison

midiGATEs vs ChaosArp

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

Head to head
About

midiGATEs

This app introduces randomness to MIDI note streams, selectively muting notes to create sparser, more dynamic musical patterns. It offers multiple modes for controlling muting probability based on note, scale, or sequence position.

Highlights
  • Random MIDI note muting
  • Four distinct muting modes
  • Gate On/Off Repeats for dynamic control
  • Note-specific muting percentages
  • Sequencer-based muting patterns
  • CoreMIDI and AUv3 support
Read full description

midiGATEs midi probability is an Audio Unit v3 MIDI Effect and CoreMIDI capable app. midiGATEs listens to MIDI input and based on random chance mutes some of the incoming notes to make a busy, repetitive stream of notes a little more interesting and sparser. It has four modes: Gate Mode - One set percentage to be muted for all notes. Also includes Gate On Repeats (when a note passes through unmuted, also pass through X more notes after) and Gate Off Repeats (when a note does not pass through the gate, also mute the next X notes) to make things a little more interesting. Note Mode - Each note in the scale (C, C#, D etc) has its own percentage chance to mute incoming notes. Sequencer Mode - Every eight notes has a different percentage chance to be muted. Can also change the sequence length to be less than eight. Thru Mode - Nothing is muted, normally not used but there if you need it. If midiGATEs is inserted as an AUv3 MIDI effect in a supported host such as Audiobus or AUM it should setup and work automatically. If you wish to use it without an Audio Unit host you can toggle the CoreMIDI input and output and use it that way.

About

ChaosArp

This music app generates complex and dynamic MIDI patterns using advanced algorithms. It offers a unique rhythm event feature and variance control for extensive customization, allowing users to create evolving musical sequences.

Highlights
  • Arpeggiator and step sequencer modes
  • Rhythm event feature with 13 algorithms
  • Pitch and rhythm variance control
  • Scale quantizer
  • Randomizable velocity and duration
  • 4 performance buttons
Currently charting
Read full description

Introducing ChaosArp, the next-level MIDI arpeggiator/step sequencer designed to transform your musical ideas into intricate, dynamic patterns with a unique twist. ChaosArp is not just any arpeggiator; it's a powerhouse tool that uses the same advanced algorithms as LoAdKer to modulate pitch, rhythm, velocity, and duration, creating evolving, complex but high musical patterns that breathe life into your music. Dive into the heart of your creativity with ChaosArp's innovative ‘rhythm event’ feature, which allows you to explore a variety of rhythmic modifications. From repeaters to stretchers and rests for extra space and emphasis—ChaosArp has it all. Each one of these rhythm events can be assigned to any of the 6 available slots, offering limitless possibilities. Fine-tune your sonic exploration with the innovative ‘variance’ control - which goes one step beyond the simple ‘probability’ control that most arpeggiators have. Adjusting this setting for either pitch or rhythm (or both) will vary the character of the generated sequences, from fairly minimalistic to completely chaotic, thus opening up a world of endless variations. Elevate your music production today with ChaosArp and unleash patterns that inspire! Features: - Two modes: arpeggiator and stepper - 1-16 steps - Scale quantizer, never miss a note again! - Variable rate, from 1/128 to 4 beats - 3 arpeggiator modes (up, down, up/down) - 3 stepper modes (forward, backward, ping-pong) - 1 to 4 octaves range - Latch mode - Pitch randomizer with probability and variance control and random octave - Rhythm event selector with probability and variance control - 6 assignable rhythm event slots - 13 rhythm event algorithms, including repeaters, stretchers, and rests - Repeat, stretch, and repeat rest probability controls for further customization of the rhythm event algorithms - Randomizable velocity and duration with variable range - 4 performance buttons that temporarily override the probabilities of pitch, rhythm, velocity, and duration - Automatable parameters

Screenshots

midiGATEs3 screens
ChaosArp4 screens

Verdict

The call

The clearest difference is update cadence: ChaosArp at every 2 weeks against midiGATEs's every 3 months. ChaosArp also leads on chart position (#183 vs unranked). midiGATEs's advantage is review sentiment (100% vs 83%) and iOS requirement (11.4 vs 13.0). On price, rating, ratings volume and ads 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

midiGATEs costs $3.99 and ChaosArp $3.99 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 — 4.8 for midiGATEs against 4.9 for ChaosArp. Both are backed by a comparable volume of ratings — 13 and 9 respectively. Written reviews are what separate them: 100% of midiGATEs's written reviews are positive against 83% of ChaosArp's.

UpkeepUpdate frequency

midiGATEs ships an update every 3 months, ChaosArp every 2 weeks. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 7 level
midiGATEs versus ChaosArp: the parameters behind the verdict, then further details
ParametermidiGATEsChaosArp
Price$3.99$3.99
Rating4.8 (13 ratings)4.9 (9 ratings) — better
Positive reviews100.0% of reviews — better83.3% of reviews
Number of ratings13 — better9
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#183 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.4 — better13.0
Further details — not scored
Size2 MB17 MB
Age rating4+4+
DeveloperArthur KernsAchillefs Sourlas

Customer experience

midiGATEs

All ratings13 ratings
Positive92.3%
Neutral7.7%
Negative0.0%
Written reviews13 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ChaosArp

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

In-app purchases

None

midiGATEs

No in-app purchases

None

ChaosArp

No in-app purchases

Questions

Is midiGATEs free?
midiGATEs costs $3.99, with no in-app purchases.
Is ChaosArp free?
ChaosArp costs $3.99, with no in-app purchases.
Which has better reviews, midiGATEs or ChaosArp?
ChaosArp is rated higher. midiGATEs averages 4.8 out of 5 from 13 ratings, while ChaosArp averages 4.9 from 9 ratings.
Do midiGATEs or ChaosArp have ads?
Neither midiGATEs nor ChaosArp shows ads.
Which is updated more often, midiGATEs or ChaosArp?
midiGATEs ships an update every 3 months, and ChaosArp every 2 weeks. Most recently, midiGATEs was updated on October 24, 2026 and ChaosArp on October 11, 2026.

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