# 3 vs ICS

The clearest difference is price: 3 at Free against ICS's $2.99. 3 also leads on update cadence (monthly vs every 9 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

3 is free to download; ICS costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

3 ships an update monthly, ICS every 9 months. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | 3 | ICS |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/3-body/id6642661687/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 9 months |
| Monetization | Free | — |
| Size | 9 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Cubic Insights LLC](https://appshunter.io/developer/1763432190) | [Smirnov Yury](https://appshunter.io/developer/420438416) |

## What reviewers say

### 3

[App page](https://appshunter.io/ios/app/3-body/id6642661687)

Explore the wonders of gravity with this 2D N-body simulator. Experiment with celestial mechanics, create mesmerizing patterns, and customize your simulations. It's a fun and educational playground for anyone curious about physics.

**Highlights:** Simulate gravity interactions, Explore preset configurations, Customize body size, color, and trails, Educational and fun physics experiments, Create mesmerizing visual patterns

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

**In-app purchases:** none


### ICS

[App page](https://appshunter.io/ios/app/ics-signal-flags-and-morse-code/id6745889978)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3 free?

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

### Is ICS free?

ICS costs $2.99, with no in-app purchases.

### Do 3 or ICS have ads?

Neither 3 nor ICS shows ads.

### Which is updated more often, 3 or ICS?

3 ships an update monthly, and ICS every 9 months. Most recently, 3 was updated on October 30, 2026 and ICS on November 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.*