# Fundamental2 vs ChaosArp

The clearest difference is price: ChaosArp at $3.99 against Fundamental2's $34.99. ChaosArp also leads on review sentiment (83% vs 57%) and rating (4.9 vs 4.7). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Fundamental2 costs $34.99 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 4.7. Both are backed by a comparable volume of ratings — 6 and 9 respectively. Written reviews point the same way: 57% of Fundamental2's written reviews are positive against 83% of ChaosArp's.

Fundamental2 ships an update every 4 weeks, ChaosArp every 2 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Fundamental2 | ChaosArp |
| --- | --- | --- |
| Price | $34.99 | **$3.99** |
| Rating | [4.7 (6 ratings)](https://appshunter.io/ios/app/fundamental2/id1602995010/reviews) | **[4.9 (9 ratings)](https://appshunter.io/ios/app/chaosarp/id6497066359/reviews)** |
| Number of ratings | 6 | **9** |
| Positive reviews | 57.1% of reviews | **83.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#183** |
| Size | 59 MB | 17 MB |
| Requires iOS | **12** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SonicPlanet Audio Video Teknolojileri Anonim Sti.](https://appshunter.io/developer/946568989) | [Achillefs Sourlas](https://appshunter.io/developer/6813431693) |

## What reviewers say

### Fundamental2

[App page](https://appshunter.io/ios/app/fundamental2/id1602995010)

Explore the origins of electronic music with this sound synthesis software. It recreates a vintage vacuum tube oscillator with advanced modulation and morphing capabilities. Ideal for live electronics, media composition, or exploring early electronic music history.

**Highlights:** Vintage vacuum tube oscillator recreation, Complex modulation possibilities, Stochastic parameter distribution, Morphing engine between scenes, Real-time tuning scale transitions, Morse code simulator LFO

**In-app purchases:** none


### ChaosArp

[App page](https://appshunter.io/ios/app/chaosarp/id6497066359)

**Currently charting:** #183 Top Paid · Music (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fundamental2 free?

Fundamental2 costs $34.99, with no in-app purchases.

### Is ChaosArp free?

ChaosArp costs $3.99, with no in-app purchases.

### Which has better reviews, Fundamental2 or ChaosArp?

ChaosArp is rated higher. Fundamental2 averages 4.7 out of 5 from 6 ratings, while ChaosArp averages 4.9 from 9 ratings.

### Do Fundamental2 or ChaosArp have ads?

Neither Fundamental2 nor ChaosArp shows ads.

### Which is updated more often, Fundamental2 or ChaosArp?

Fundamental2 ships an update every 4 weeks, and ChaosArp every 2 weeks. Most recently, Fundamental2 was updated on October 7, 2026 and ChaosArp on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*