# Chladni Screen vs Poly 2

The clearest difference is price: Poly 2 at Free against Chladni Screen's $1.99. Poly 2 also leads on review sentiment (84% vs 49%) and update cadence (every 4 weeks vs every 8 months). Chladni Screen's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Poly 2 is free to download; Chladni Screen costs $1.99 up front. Poly 2 sells 1 one-off in-app purchase. Chladni Screen asks for nothing beyond the download.

Poly 2 holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Poly 2 has 686 ratings behind it against 81, so its average is the more settled of the two. Written reviews point the same way: 49% of Chladni Screen's written reviews are positive against 84% of Poly 2's.

Chladni Screen ships an update every 8 months, Poly 2 every 4 weeks. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Chladni Screen | Poly 2 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.6 (81 ratings)](https://appshunter.io/ios/app/chladni-screen/id1385177377/reviews) | **[4.8 (686 ratings)](https://appshunter.io/ios/app/poly-2/id1477029326/reviews)** |
| Number of ratings | 81 | **686** |
| Positive reviews | 48.6% of reviews | **84.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 153 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Narumi Inada](https://appshunter.io/developer/1347729163) | [James Milton](https://appshunter.io/developer/581503621) |

## What reviewers say

### Chladni Screen

[App page](https://appshunter.io/ios/app/chladni-screen/id1385177377)

Explore the mesmerizing patterns created by sound vibrations on a digital surface. This app simulates Chladni figures, visualizing how different sounds, including your voice and instruments, create intricate geometric shapes.

**Highlights:** Simulates Chladni figures digitally, Visualizes sound vibrations, Uses voice and instruments as sound sources, Displays geometric patterns, Offers multiple display modes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Poly 2

[App page](https://appshunter.io/ios/app/poly-2/id1477029326)

This app generates evolving musical patterns and melodies using polyrhythms. It offers extensive sound manipulation with a sampler, multiple effects, and the ability to store numerous configurations. Users can also import their own sounds and integrate with other music production tools.

**Highlights:** Generative polyrhythm sequencing, Up to 8 simultaneous sounds, Sampler with envelopes and filters, Randomize capabilities, Built-in delay, reverb, distortion, and EQ FX, AUv3, Audiobus, and IAA support, Import custom samples

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro mode | $11.99 | one-time |

**What reviewers like**

- 🚀 Unique, creative, and powerful tool
- 👍 Intuitive and user-friendly interface
- 🎨 Excellent for ambient, experimental, and generative music
- 🎹 Great for drum grooves and rhythmic patterns
- 💻 Seamless integration with external hardware and software

**What reviewers complain about**

- 🐛 Occasional crashes and bugs
- 🔇 Lack of sustain/voice ring-out when transport is stopped
- 📺 Small interface elements can be difficult to use on iPad
- 🔌 Compatibility issues with some third-party apps

**Reported bugs**

- In-app purchase not working for some users
- MIDI connectivity issues with certain apps
- Crashes upon opening for some users

**Requested features**

- Ability to preview samples before importing
- Autoslice/autochop functionality for samples
- Support for larger sample imports and automatic slot filling
- Granulizer effect
- Note repeat and vinyl effects


## Frequently asked questions

### Is Chladni Screen free?

Chladni Screen costs $1.99, with no in-app purchases.

### Is Poly 2 free?

Poly 2 is free to download, with in-app purchases available.

### Which has better reviews, Chladni Screen or Poly 2?

Poly 2 is rated higher. Chladni Screen averages 4.6 out of 5 from 81 ratings, while Poly 2 averages 4.8 from 686 ratings.

### Do Chladni Screen or Poly 2 have ads?

Neither Chladni Screen nor Poly 2 shows ads.

### Which is updated more often, Chladni Screen or Poly 2?

Chladni Screen ships an update every 8 months, and Poly 2 every 4 weeks. Most recently, Chladni Screen was updated on September 18, 2026 and Poly 2 on September 8, 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.*