# Multinomial vs Probability Sim

The clearest difference is in-app purchases: Multinomial at none against Probability Sim's 2. Multinomial also leads on ads (none vs shown). Probability Sim's advantage is update cadence (every 10 months vs every 47 months) and iOS requirement (15.0 vs 18.6). On price 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. Multinomial asks for nothing beyond the download.

Multinomial ships an update every 47 months, Probability Sim every 10 months. The most recent releases landed on November 6, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Multinomial | Probability Sim |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 47 months | **Every 10 months** |
| Size | 1 MB | 29 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Reinhard MAENNER](https://appshunter.io/developer/578568275) | [kota tada](https://appshunter.io/developer/1658942612) |

## What reviewers say

### Multinomial

[App page](https://appshunter.io/ios/app/multinomial/id578568272)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Multinomial free?

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

### Is Probability Sim free?

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

### Do Multinomial or Probability Sim have ads?

Probability Sim shows ads; Multinomial does not.

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

Multinomial ships an update every 47 months, and Probability Sim every 10 months. Most recently, Multinomial was updated on November 6, 2026 and Probability Sim on November 12, 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.*