ChaosArp vs Polyrhythm Explorer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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 descriptionHide 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
Polyrhythm Explorer
Learn and master complex rhythmic patterns with interactive guides and visual tools. Explore polyrhythms through written lessons, video tutorials, and customizable sound options. Ideal for musicians of all levels seeking to deepen their rhythmic understanding.
- Written guides and video tutorials
- Linear and Grid Layout Modes
- Voice Count for isolated rhythms
- Customizable sounds (drums, keyboard)
- Polymeter visualization
- Sample-accurate timing
- Full-Screen Mode
Read full descriptionHide full description
Master Polyrhythms with Ease—No Prior Knowledge Needed... Whether you’re a beginner or an advanced musician, Polyrhythm Explorer provides you with everything you need to understand and master polyrhythms. Polyrhythm Explorer features: - Written guides and video tutorials teach you what polyrhythms are and how to understand a polyrhythm step-by-step. - Linear and Grid Layout Modes: Easily visualize how two rhythms interact with each other in a polyrhythm. See how the rhythms relate to help you understand them. - Voice Count: Isolate one rhythm or the other in a polyrhythm and hear it counted out loud. - Full-Screen Mode: Hide controls for an immersive, focused learning experience. Perfect for creating videos teaching polyrhythms. - Customizable Sounds: Experience polyrhythms on a drum kit or as melodic keyboard patterns. - Polymeters: With subdivisions on, you can hear a polyrhythm as a polymeter. - Sample-accurate timing. Can be used as a metronome. - Seamless Integration with PolyNome --- Polyrhythm Explorer is the perfect companion to PolyNome (also available on the App Store). Export polyrhythms to PolyNome to view them as notation or circular visuals. PolyNome also supports 3-way polyrhythms and offers numerous features beyond polyrhythms. Start Your Rhythmic Journey Today! Transform your musical skills and explore the complexity of rhythms with Polyrhythm Explorer.
Screenshots
Verdict
The clearest difference is rating: ChaosArp at 4.9 against Polyrhythm Explorer's 4.5. ChaosArp also leads on chart position (#136 vs unranked) and price ($3.99 vs $4.99). Polyrhythm Explorer's advantage is update cadence (every 8 days vs every 2 weeks). On review sentiment, 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
ChaosArp costs $3.99 and Polyrhythm Explorer $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ChaosArp holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 9 and 12 respectively. Written reviews complicate that: 83% of ChaosArp's written reviews are positive against 88% of Polyrhythm Explorer's, so the app with the better star average is not the one people write more warmly about.
ChaosArp ships an update every 2 weeks, Polyrhythm Explorer every 8 days. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.
| Parameter | ChaosArp | Polyrhythm Explorer |
|---|---|---|
| Price | $3.99 — better | $4.99 |
| Rating | 4.9 (9 ratings) — better | 4.5 (12 ratings) |
| Positive reviews | 83.3% of reviews | 87.5% of reviews — better |
| Number of ratings | 9 | 12 — better |
| Update frequency | Every 2 weeks | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #136 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 17 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Achillefs Sourlas | PolyNome Ltd |
Customer experience
ChaosArp
Polyrhythm Explorer
In-app purchases
ChaosArp
No in-app purchases
Polyrhythm Explorer
No in-app purchases








