Comparison

WoodTroller vs ChaosArp

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

Head to head
About

WoodTroller

This app functions as a multi-touch bar MIDI controller for MPE and MIDI V2. It offers customizable rotary controls and buttons to manage various parameters and send MIDI commands, with iCloud syncing for presets.

Highlights
  • MPE touch bar with individual pitch shift, pressure, and CC74 control
  • 8 customizable rotary controls for sending multiple CC messages
  • 8 programmable buttons for sending various MIDI commands
  • User-definable rotary and button names, colors, and ranges
  • Preset storage and automatic syncing via iCloud
  • Stand-alone app and AUv3 plugin support
Features
Read full description

WoodTroller is NOT an app to annoy people. It’s an MPE and midi V2 multi touch bar keyboard and midi controller : The MPE touch bar supports multiple notes with individual pitch shift (horizontal movement), pressure and cc74 (vertical movement). WoodTroller has 8 general purpose rotary controls : - Each can send 6 different CC messages to different channels. - Each of the 6 command values can be mapped differently to the full rotary range. - So 1 rotary can control several parameters on the same or on different instruments. - Rotary names, colour, unit, range can all be user set. WoodTroller also has 8 general purpose on-off or push buttons : - Each button can send up to 8 different midi commands (CC, PC, NoteOn, …) to different channels. - This allows to quickly switch multiple midi instruments or devices to another program or to other settings. - Each midi command’s data value can be auto incremented/decremented. - All button names, colour, type can be user set. All settings can be stored in presets in iCloud which yield automatic preset syncing between several WoodTrollers on different devices. WoodTroller is available as stand-alone app and as AUv3 plugin.

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

Screenshots

ChaosArp4 screens

Verdict

The call

The clearest difference is price: ChaosArp at $3.99 against WoodTroller's $9.99. WoodTroller's advantage is review sentiment (100% vs 83%). On rating, ratings volume, update cadence 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

WoodTroller costs $9.99 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 WoodTroller against 4.9 for ChaosArp. Both are backed by a comparable volume of ratings — 6 and 9 respectively. Written reviews are what separate them: 100% of WoodTroller's written reviews are positive against 83% of ChaosArp's.

UpkeepUpdate frequency

WoodTroller ships an update fortnightly, ChaosArp every 2 weeks. Both last shipped on October 24, 2026.

Scorecard2 real differences · 8 level
WoodTroller versus ChaosArp: the parameters behind the verdict, then further details
ParameterWoodTrollerChaosArp
Price$9.99$3.99 — better
Rating4.8 (6 ratings)4.9 (9 ratings) — better
Positive reviews100.0% of reviews — better83.3% of reviews
Number of ratings69 — better
Update frequencyFortnightly — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPad, MaciPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size12 MB17 MB
Age rating4+4+
DeveloperWoodman's Immaculate Maple Syrup StudioAchillefs Sourlas

Customer experience

WoodTroller

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 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

WoodTroller

No in-app purchases

None

ChaosArp

No in-app purchases

Questions

Is WoodTroller free?
WoodTroller costs $9.99, with no in-app purchases.
Is ChaosArp free?
ChaosArp costs $3.99, with no in-app purchases.
Which has better reviews, WoodTroller or ChaosArp?
ChaosArp is rated higher. WoodTroller averages 4.8 out of 5 from 6 ratings, while ChaosArp averages 4.9 from 9 ratings.
Do WoodTroller or ChaosArp have ads?
Neither WoodTroller nor ChaosArp shows ads.
Which is updated more often, WoodTroller or ChaosArp?
WoodTroller ships an update fortnightly, and ChaosArp every 2 weeks. Most recently, WoodTroller was updated on October 24, 2026 and ChaosArp on October 24, 2026.

Other comparisons