Comparison

ChaosArp vs Note to Be

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
Features
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

Note to Be

This app offers advanced MIDI quantization for iOS musicians. It allows precise control over note selection, octave flexibility, and MIDI CC integration for crafting harmonious compositions and dynamic live performances. Supports microtonal scales and multi-synth setups.

Highlights
  • Customizable note and octave selection
  • MIDI CC to note conversion
  • Multi-synth channel assignment
  • Live performance toggles
  • Microtonal scale support (Scala Library)
  • MPE polyphonic playback
Features
Read full description

Take full control of your MIDI experience with Note to Be—the powerful iOS app designed to transform how you interact with your music. Whether you're working with a MIDI keyboard, sequencer, or MIDI CC input, Note to Be ensures your notes are perfectly quantized to the nearest selected note, allowing you to craft precise, harmonious compositions with ease. Key Features: - Customizable Note Selection: Choose individual notes from any octave, or apply your selection across the full -1 to +8 octave range. - Octave Flexibility: Work within the entire octave spectrum, selecting and unselecting notes with a simple tap. - MIDI CC Integration: Use MIDI CC from hardware controllers or apps like ShiftBud to convert control changes into quantized notes. Easily create chord voicings and dynamic live performances. - Multi-Synth Support: Assign different MIDI channels to multiple synths, allowing each to respond to the quantized MIDI output independently. - Live Performance Enhancement: Engage the 'all notes' toggle to instantly apply note selections across all octaves or quickly select notes in a specific key and scale. - Microtonality: Select a microtonal scale from the Scala Library with +5000 microtonal scales, or import your own to the iCloud folder. Play the MPE supported synths polyphonically. With Note to Be, your music becomes a canvas, and every note is a brushstroke. Unlock new creative possibilities and refine your sound with the precision of MIDI quantization, right from your iOS device. Note to Be is a MIDI app and does not produce any sound on its own. You need a MIDI input source and an audio output destination in order to work with Note to Be. The AUv3 plugin requires an AUv3 host app such as AUM, Logic Pro for iPad, Loopy Pro, Cubasis, Nanostudio, apeMatrix, Audiobus etc.

Screenshots

ChaosArp4 screens
Note to Be4 screens

Verdict

The call

ChaosArp and Note to Be both sit at 4.9 stars, but that hides the real split: 83% of ChaosArp's written reviews are positive against 50% of Note to Be's. On price, rating, ratings volume and update cadence 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 Note to Be $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 — 4.9 for ChaosArp against 4.9 for Note to Be. Both are backed by a comparable volume of ratings — 9 and 7 respectively. Written reviews are what separate them: 83% of ChaosArp's written reviews are positive against 50% of Note to Be's.

UpkeepUpdate frequency

ChaosArp ships an update fortnightly, Note to Be every 9 days. The most recent releases landed on September 8, 2026 and September 21, 2026 respectively.

Scorecard1 real difference · 9 level
ChaosArp versus Note to Be: the parameters behind the verdict, then further details
ParameterChaosArpNote to Be
Price$3.99$3.99
Rating4.9 (9 ratings)4.9 (7 ratings)
Positive reviews83.3% of reviews — better50.0% of reviews
Number of ratings9 — better7
Update frequencyFortnightlyEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size16 MB71 MB
Age rating4+4+
DeveloperAxart Labs OUCem Olcay

Customer experience

ChaosArp

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

Note to Be

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

ChaosArp

No in-app purchases

None

Note to Be

No in-app purchases

Questions

Is ChaosArp free?
ChaosArp costs $3.99, with no in-app purchases.
Is Note to Be free?
Note to Be costs $3.99, with no in-app purchases.
Which has better reviews, ChaosArp or Note to Be?
ChaosArp and Note to Be are both rated 4.9 out of 5 on the App Store, from 9 and 7 ratings respectively.
Do ChaosArp or Note to Be have ads?
Neither ChaosArp nor Note to Be shows ads.
Which is updated more often, ChaosArp or Note to Be?
ChaosArp ships an update fortnightly, and Note to Be every 9 days. Most recently, ChaosArp was updated on September 8, 2026 and Note to Be on September 21, 2026.

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