VADrum2 vs ChaosArp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VADrum2
Create electronic music with a virtual analog drum machine. Features a synthesizer with 27 voices, built-in effects, and a powerful sequencer. Save projects to iCloud and use it as a standalone app or an Audio Unit Extension.
- 27 virtual analog and sample playback drum voices
- Integrated delay, chorus, flanger, reverb, EQ, and compressor
- 16-bar pattern sequencer with parameter automation
- Stand-alone app and AUv3 extension support
- Ableton Link and Bluetooth MIDI compatibility
- iCloud Drive project saving
- Universal Purchase for iOS and macOS
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VADrum2 is a virtual analog drum machine for iPhone, iPad and Mac. VADrum2 consists of drum synthesizer, effects and a sequencer. The drum synthesizer includes 27 drum voices, which are 23 virtual analog modules and 4 sample playback modules and they are inspired by the iconic analog drum machines of the 1980’s. The Effects includes delay, chorus, flanger, reverb, eq, and compressor. The sequencer offers ability to program 16 bar pattern per clip and parameter automation. Project files can be saved in iCloud Drive. VADrum2 works as a stand alone or as an Audio Unit Extension (AUv3). Stand Alone supports Ableton Link, Bluetooth MIDI and MIDI IN/OUT. Main Features Drum Synthesizer - 27 drum synthesizer modules (24 virtual analog and 4 sample playback) Sequencer - 16 bar patterns per clip. Total 16 clips. - Parameter automation. Audio Export - Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) - Support iCloud Drive. - Support Universal Purchase (Works on iOS devices and macOS devices) - Support Ableton Link, Bluetooth MIDI, MIDI In / Out. - Support Audio Unit Extension (AUv3) System Requirements - AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. - AudioUnit Extension (AUv3) is supported by Apple Garage Band on iOS and macOS, and Apple Logic on Mac. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension (AUv3).
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
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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
Verdict
The clearest difference is price: ChaosArp at $3.99 against VADrum2's $14.99. ChaosArp also leads on update cadence (every 2 weeks vs every 5 months) and rating (4.9 vs 4.5). 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
VADrum2 costs $14.99 and ChaosArp $3.99 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 — 16 and 9 respectively. Written reviews point the same way: 75% of VADrum2's written reviews are positive against 83% of ChaosArp's.
VADrum2 ships an update every 5 months, ChaosArp every 2 weeks. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.
| Parameter | VADrum2 | ChaosArp |
|---|---|---|
| Price | $14.99 | $3.99 — better |
| Rating | 4.5 (16 ratings) | 4.9 (9 ratings) — better |
| Positive reviews | 75.0% of reviews | 83.3% of reviews — better |
| Number of ratings | 16 — better | 9 |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 14.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 27 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryo Togawa | Achillefs Sourlas |
Customer experience
VADrum2
ChaosArp
In-app purchases
VADrum2
No in-app purchases
ChaosArp
No in-app purchases









