Comparison

ChaosArp vs luapsel

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

luapsel

Create calming electric guitar ambience with reversed samples and built-in effects. Offers polyphonic playback, multiple articulations, and real-time sound shaping tools for unique musical textures.

Highlights
  • Polyphonic reversed guitar sounds
  • Round Robin sampling
  • Multiple articulations
  • Built-in delay, reverb, chorus
  • Real-time low-pass filter
  • ADSR Release control
  • Standalone samples available
Features
Read full description

luapsel: Unique Evolving Electric Guitar Ambience luapsel is a collection of Electric Guitar samples, meticulously multi-sampled in Round Robin and reversed in the most transparent way possible to offer your projects an easy-to-use calming vibe. Play around with built-in delay, reverb, and chorus effects, or go au naturel. Sound design is a breeze with real-time filters, release control, and tuning options. Get luapsel for free inside Decent Sampler or just enjoy the raw samples, or grab the new improved app for just $1. Features -Polyphonic reversed guitar sounds -Round Robin sampling for nuanced playback -Four articulations: Original, Looped, Fast, & Slow -Built-in delay, reverb, and chorus effects -Real-time low-pass filter (Tone) -ADSR Release control and real-time sampling tuning -Available for Decent Sampler or as standalone samples

Screenshots

ChaosArp4 screens
luapsel3 screens

Verdict

The call

The clearest difference is rating: ChaosArp at 4.9 against luapsel's 4.5. luapsel's advantage is update cadence (every 6 days vs every 2 weeks) and price ($0.99 vs $3.99). On ratings volume, 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 luapsel $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

ChaosArp holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 9 and 4 respectively.

UpkeepUpdate frequency

ChaosArp ships an update every 2 weeks, luapsel every 6 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
ChaosArp versus luapsel: the parameters behind the verdict, then further details
ParameterChaosArpluapsel
Price$3.99$0.99 — better
Rating4.9 (9 ratings) — better4.5 (4 ratings)
Positive reviews83.3% of reviews—
Number of ratings9 — better4
Update frequencyEvery 2 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size17 MB101 MB
Age rating4+4+
DeveloperAchillefs SourlasOSC Audio

Customer experience

ChaosArp

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

luapsel

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%

In-app purchases

None

ChaosArp

No in-app purchases

None

luapsel

No in-app purchases

Questions

Is ChaosArp free?
ChaosArp costs $3.99, with no in-app purchases.
Is luapsel free?
luapsel costs $0.99, with no in-app purchases.
Which has better reviews, ChaosArp or luapsel?
ChaosArp is rated higher. ChaosArp averages 4.9 out of 5 from 9 ratings, while luapsel averages 4.5 from 4 ratings.
Do ChaosArp or luapsel have ads?
Neither ChaosArp nor luapsel shows ads.
Which is updated more often, ChaosArp or luapsel?
ChaosArp ships an update every 2 weeks, and luapsel every 6 days. Most recently, ChaosArp was updated on October 24, 2026 and luapsel on October 24, 2026.

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