# Touch Waves vs Projectile Lab by ChatStick

The clearest difference is price: Projectile Lab by ChatStick at Free against Touch Waves's $3.99. Touch Waves's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Projectile Lab by ChatStick is free to download; Touch Waves costs $3.99 up front. Projectile Lab by ChatStick sells 1 one-off in-app purchase. Touch Waves asks for nothing beyond the download.

## The numbers

| Metric | Touch Waves | Projectile Lab by ChatStick |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/touch-waves/id347672384/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 63.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | — |
| Monetization | Paid | — |
| Size | 49 MB | 12 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xavier Daxhelet](https://appshunter.io/developer/339056993) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Touch Waves

[App page](https://appshunter.io/ios/app/touch-waves/id347672384)

Explore wave physics with interactive animations and detailed explanations. This app covers vibrations, waves on strings, acoustics, and optics, making complex concepts visual and understandable for students and educators.

**Highlights:** Wave physics concepts, Interactive animations (2D & 3D), Basic equations, Classroom projection support, Covers vibration, acoustics, optics, Detailed subject list

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

**In-app purchases:** none


### Projectile Lab by ChatStick

[App page](https://appshunter.io/ios/app/projectile-lab-by-chatstick/id6761547280)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Projectile Lab Premium | $2.99 | one-time |


## Frequently asked questions

### Is Touch Waves free?

Touch Waves costs $3.99, with no in-app purchases.

### Is Projectile Lab by ChatStick free?

Projectile Lab by ChatStick is free to download, with in-app purchases available.

### Do Touch Waves or Projectile Lab by ChatStick have ads?

Projectile Lab by ChatStick shows ads; Touch Waves does not.

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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.*