Comparison

ChaosArp vs FuncBud Math Sequencer & Synth

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

FuncBud Math Sequencer & Synth

Generate musical sequences using mathematical functions. Build and chain formulas to create complex, evolving melodies within a chosen key and scale. Offers conditional logic and random generation for unique musical patterns.

Highlights
  • Mathematical function builder
  • Sequence chaining and repetition
  • Conditional and random functions
  • Key, scale, and octave control
  • Adjustable sequencer parameters
  • MIDI output
  • AUv3 plugin support
Features
Read full description

FuncBud is an AUv3 MIDI sequencer app that generates sequences using simple math functions. You can create math functions with the function builder, then chain and repeat them to create complex sequences. A simple x + 1 function would sequence all the notes in the scale in order. It gets more interesting when you use different formulas and chain them. The sequencer starts from the root note and evaluates the first formula to calculate the new note. Then, it moves to the next formula. If it's a repeating function, it repeats the specified number of times before moving to the next formula. The formula's result is converted to a note in the working key and scale, within the defined minimum and maximum octaves. This new note is then played. Additionally, the result is stored in a history of up to 64 entries for later sum or product calculations The function builder lets you create functions with simple addition, subtraction, multiplication and division operations as well as square, square root, sum and product operations. You can also use parentheses to prioritize the calculation order. The newly created function will be saved and accessible in the library across both the standalone app and AUv3 instances. With the conditional functions, you can specify a condition like "if this function is greater than that function, then execute the function A, otherwise execute the function B". The random function generator will generate a value between two functions, a function for the lower bound and another function for the upper bound. The sequencer picks the notes in the current key and scale, between the minimum and maximum octaves. You also have a root note, the starting note, which are all defined at the top of the UI. You can use BrainBud to change the key and scale as well. The sequencer speed (rate), gate length, gate length variety, velocity, velocity variety and swing parameters are accessible with the sliders at the bottom of the UI. In edit mode, you can change the order of the functions. You can also delete a function in edit mode, or simply by swiping it to the left. Newly created patterns automatically copy the current one, making subtle changes easier. If you prefer a clean slate, you can quickly clear the list with the clear button. The loop detection function is accessible in the settings menu. When enabled, it would detect the loop and increment the 'x' value by 1 to break the loop. Please note that FuncBud is a MIDI app. The standalone version has an optional internal synth where you can enable or disable on the settings menu. The AUv3 plugin requires an audio app for output. For the AUv3 functionality, it needs to be hosted within an app such as AUM, Loopy Pro, Cubasis, Logic Pro, Nanostudio, Drambo, or apeMatrix.

Screenshots

ChaosArp4 screens
FuncBud Math Sequencer & Synth4 screens

Verdict

The call

ChaosArp and FuncBud Math Sequencer & Synth both sit at 4.9 stars, but that hides the real split: 83% of ChaosArp's written reviews are positive against 67% of FuncBud Math Sequencer & Synth's. ChaosArp also leads on price ($3.99 vs $5.99). FuncBud Math Sequencer & Synth's advantage is update cadence (every 6 days vs every 2 weeks). On rating, ratings volume, 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

ChaosArp costs $3.99 and FuncBud Math Sequencer & Synth $5.99 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 FuncBud Math Sequencer & Synth. Both are backed by a comparable volume of ratings — 9 and 8 respectively. Written reviews are what separate them: 83% of ChaosArp's written reviews are positive against 67% of FuncBud Math Sequencer & Synth's.

UpkeepUpdate frequency

ChaosArp ships an update every 2 weeks, FuncBud Math Sequencer & Synth every 6 days. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 7 level
ChaosArp versus FuncBud Math Sequencer & Synth: the parameters behind the verdict, then further details
ParameterChaosArpFuncBud Math Sequencer & Synth
Price$3.99 — better$5.99
Rating4.9 (9 ratings)4.9 (8 ratings)
Positive reviews83.3% of reviews — better66.7% of reviews
Number of ratings9 — better8
Update frequencyEvery 2 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size17 MB14 MB
Age rating4+4+
DeveloperAchillefs SourlasCem Olcay

Customer experience

ChaosArp

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

FuncBud Math Sequencer & Synth

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

In-app purchases

None

ChaosArp

No in-app purchases

None

FuncBud Math Sequencer & Synth

No in-app purchases

Questions

Is ChaosArp free?
ChaosArp costs $3.99, with no in-app purchases.
Is FuncBud Math Sequencer & Synth free?
FuncBud Math Sequencer & Synth costs $5.99, with no in-app purchases.
Which has better reviews, ChaosArp or FuncBud Math Sequencer & Synth?
ChaosArp and FuncBud Math Sequencer & Synth are both rated 4.9 out of 5 on the App Store, from 9 and 8 ratings respectively.
Do ChaosArp or FuncBud Math Sequencer & Synth have ads?
Neither ChaosArp nor FuncBud Math Sequencer & Synth shows ads.
Which is updated more often, ChaosArp or FuncBud Math Sequencer & Synth?
ChaosArp ships an update every 2 weeks, and FuncBud Math Sequencer & Synth every 6 days. Most recently, ChaosArp was updated on October 11, 2026 and FuncBud Math Sequencer & Synth on October 15, 2026.

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