# Monty Hall Doors vs Heatmap Chess

The clearest difference is in-app purchases: Monty Hall Doors at none against Heatmap Chess's 1. Monty Hall Doors also leads on update cadence (every 3 weeks vs every 2 months). Heatmap Chess's advantage is iOS requirement (13.4 vs 15). On price, ads and device support there is nothing between them.

Both are free to download. Heatmap Chess sells 1 one-off in-app purchase. Monty Hall Doors asks for nothing beyond the download.

Monty Hall Doors ships an update every 3 weeks, Heatmap Chess every 2 months. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Monty Hall Doors | Heatmap Chess |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 50 MB | 19 MB |
| Requires iOS | 15 | **13.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Lam Nhan](https://appshunter.io/developer/1551996053) | [Utku Kucu](https://appshunter.io/developer/1896253523) |

## What reviewers say

### Monty Hall Doors

[App page](https://appshunter.io/ios/app/monty-hall-doors/id1663646354)

Engage with an interactive game show that simplifies probability concepts. Explore the famous Monty Hall problem through gameplay, fast simulations, and visual explanations to understand why switching doors impacts your odds.

**Highlights:** Interactive Monty Hall game rounds, High-speed strategy simulations, Visual probability explanations, Statistics tracking for win rates, Educational puzzle gameplay

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

**In-app purchases:** none


### Heatmap Chess

[App page](https://appshunter.io/ios/app/heatmap-chess/id6766252248)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $4.99 | one-time |


## Frequently asked questions

### Is Monty Hall Doors free?

Monty Hall Doors is free to download, with no in-app purchases.

### Is Heatmap Chess free?

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

### Do Monty Hall Doors or Heatmap Chess have ads?

Both Monty Hall Doors and Heatmap Chess show ads.

### Which is updated more often, Monty Hall Doors or Heatmap Chess?

Monty Hall Doors ships an update every 3 weeks, and Heatmap Chess every 2 months. Most recently, Monty Hall Doors was updated on October 1, 2026 and Heatmap Chess on October 13, 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.*