# Atomus vs CASTMORE

The clearest difference is in-app purchases: Atomus at none against CASTMORE's 2. Atomus also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). CASTMORE's advantage is update cadence (every 3 weeks vs every 2 months). On price and ads there is nothing between them.

Both are free to download. CASTMORE sells 2 in-app purchases, starting at $4.99 per month. Atomus asks for nothing beyond the download.

Atomus ships an update every 2 months, CASTMORE every 3 weeks. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Atomus | CASTMORE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (525 ratings)](https://appshunter.io/ios/app/atomus/id1605327908/reviews)** | — |
| Number of ratings | **525** | — |
| Positive reviews | 89.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 92 MB | 18 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SungLab Inc](https://appshunter.io/developer/1691666995) | [RADLAB LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1890751329) |

## What reviewers say

### Atomus

[App page](https://appshunter.io/ios/app/atomus/id1605327908)

This app is an interactive visualizer that creates beautiful, dynamic art inspired by natural phenomena and abstract concepts. It offers customizable particle effects, multi-touch interaction, and music integration, designed to inspire creativity or provide a relaxing visual experience.

**Highlights:** 10-Finger Multi-touch Display, 5 Music Choices, Fastest Speed (60 FPS), 12,000 Particles, Customizable Particle Length, Number, & Size, 3-Color Modes

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

**In-app purchases:** none

**What reviewers like**

- 👍 Relaxing and calming experience
- 🚀 Smooth and responsive
- 💡 Customizable particle effects
- 🔒 No ads or in-app purchases

**What reviewers complain about**

- 🐛 Occasional crashes or performance issues
- 💡 Limited color and customization options
- 🔋 Drains battery life quickly

**Reported bugs**

- Crashes when using more than 10 fingers
- Inconsistent ad frequency

**Requested features**

- More color and particle effect options
- Ability to turn off sound/music
- Haptic feedback support


### CASTMORE

[App page](https://appshunter.io/ios/app/castmore/id6761669225)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Castmore Premium Monthly | $4.99 | per month |
| Castmore Premium — Yearly | $34.99 | per year |


## Frequently asked questions

### Is Atomus free?

Atomus is free to download, with no in-app purchases.

### Is CASTMORE free?

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

### Do Atomus or CASTMORE have ads?

Both Atomus and CASTMORE show ads.

### Which is updated more often, Atomus or CASTMORE?

Atomus ships an update every 2 months, and CASTMORE every 3 weeks. Most recently, Atomus was updated on October 11, 2026 and CASTMORE on October 7, 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.*