Comparison

ChaosArp vs mididelay

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

Head to head
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
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

About

mididelay

This app applies traditional delay effects to MIDI data, allowing for complex sound manipulation. It offers multiple independent delay lines, various MIDI message processing, and customizable feedback chains with built-in effects. Organize lines sequentially or in parallel for unique sonic textures.

Highlights
  • 8 independent delay lines with feedback
  • Processes MIDI notes, CC, aftertouch, pressure, pitch bend
  • Customizable feedback modes (average, min, max)
  • Sequential and parallel delay line algorithms
  • Scale quantize, pitch, and velocity randomization
  • 3 independent scenes with cross-fading
  • Standalone and AUv3 support
Features
Read full description

mididelay is an implementation of traditional delay effect adapted for the MIDI data. It features: • 8 independent delay lines with feedback • Each delay line can process MIDI notes, control change, aftertouch, polyphonic key pressure and pitch bend messages. • For the feedback, the “feedback level” is applied to the messages; note messages change velocity and all other messages can be mixed with previous values using one of three modes (average, minimum and maximum value) • It’s possible to organise delay lines in different possible ‘algorithms’, sequentially and/or in parallel • There are three effects available inside delay’s feedback chain: scale quantise, pitch and velocity value operations randomisation • Each ‘preset’ contains 3 independent scenes marked “A”,”B” and “C”, it’s possible to cross- fade between them and adjust overall amount of the effect with 2D pad. • Simple mode : only one delay with scenes morphing. Standalone and AUv3

Screenshots

ChaosArp4 screens
mididelay3 screens

Verdict

The call

The clearest difference is update cadence: ChaosArp at every 2 weeks against mididelay's every 10 months. ChaosArp also leads on ratings volume (9 vs 3) and price ($3.99 vs $4.99). mididelay's advantage is review sentiment (100% vs 83%). 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

ChaosArp costs $3.99 and mididelay $4.99 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 — 4.9 for ChaosArp against 5.0 for mididelay. Both are backed by a comparable volume of ratings — 9 and 3 respectively. Written reviews are what separate them: 83% of ChaosArp's written reviews are positive against 100% of mididelay's.

UpkeepUpdate frequency

ChaosArp ships an update every 2 weeks, mididelay every 10 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard5 real differences · 5 level
ChaosArp versus mididelay: the parameters behind the verdict, then further details
ParameterChaosArpmididelay
Price$3.99 — better$4.99
Rating4.9 (9 ratings)5.0 (3 ratings) — better
Positive reviews83.3% of reviews100.0% of reviews — better
Number of ratings9 — better3
Update frequencyEvery 2 weeks — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size17 MB9 MB
Age rating4+4+
DeveloperAchillefs SourlasAlexey Nadzharov

Customer experience

ChaosArp

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

mididelay

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ChaosArp

No in-app purchases

None

mididelay

No in-app purchases

Questions

Is ChaosArp free?
ChaosArp costs $3.99, with no in-app purchases.
Is mididelay free?
mididelay costs $4.99, with no in-app purchases.
Which has better reviews, ChaosArp or mididelay?
mididelay is rated higher. ChaosArp averages 4.9 out of 5 from 9 ratings, while mididelay averages 5.0 from 3 ratings.
Do ChaosArp or mididelay have ads?
Neither ChaosArp nor mididelay shows ads.
Which is updated more often, ChaosArp or mididelay?
ChaosArp ships an update every 2 weeks, and mididelay every 10 months. Most recently, ChaosArp was updated on October 24, 2026 and mididelay on October 27, 2026.

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