# Probability Sim vs randomBox

The clearest difference is in-app purchases: randomBox at none against Probability Sim's 2. randomBox also leads on update cadence (every 5 days vs every 10 months). Probability Sim's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

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

Probability Sim ships an update every 10 months, randomBox every 5 days. The most recent releases landed on October 22, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Probability Sim | randomBox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 5 days** |
| Size | 29 MB | 13 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kota tada](https://appshunter.io/developer/1658942612) | [Taeseok Yeom](https://appshunter.io/developer/1393679512) |

## What reviewers say

### Probability Sim

[App page](https://appshunter.io/ios/app/probability-sim-trillion/id6743378063)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $49.99 | per year |


### randomBox

[App page](https://appshunter.io/ios/app/randombox/id6755875579)

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

**In-app purchases:** none


## Frequently asked questions

### Is Probability Sim free?

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

### Is randomBox free?

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

### Do Probability Sim or randomBox have ads?

Both Probability Sim and randomBox show ads.

### Which is updated more often, Probability Sim or randomBox?

Probability Sim ships an update every 10 months, and randomBox every 5 days. Most recently, Probability Sim was updated on October 22, 2026 and randomBox 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.*