# Mahjong 4 Friends vs Mental Chronometry

The clearest difference is price: Mahjong 4 Friends at Free against Mental Chronometry's $0.99. Mahjong 4 Friends also leads on update cadence (monthly vs every 42 months) and chart position (#18 vs unranked). Mental Chronometry's advantage is in-app purchases (none vs 8) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Mahjong 4 Friends is free to download; Mental Chronometry costs $0.99 up front. Mahjong 4 Friends sells 8 in-app purchases, starting at $0.99 per month. Mental Chronometry asks for nothing beyond the download.

Mahjong 4 Friends ships an update monthly, Mental Chronometry every 42 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mahjong 4 Friends | Mental Chronometry |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.9 (26K ratings)](https://appshunter.io/ios/app/mahjong-4-friends-multiplayer/id1552704332/reviews)** | — |
| Number of ratings | **26K** | — |
| Positive reviews | 75.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 42 months |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#18** | — |
| Size | 68 MB | 201 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Unwind Media, LLC](https://appshunter.io/developer/1678577522) | [Paul Cohen](https://appshunter.io/developer/908777603) |

## What reviewers say

### Mahjong 4 Friends

[App page](https://appshunter.io/ios/app/mahjong-4-friends-multiplayer/id1552704332)

**Currently charting:** #18 Top Free · Family, #50 Top Free · Board, #80 Top Grossing · Family, #139 Top Grossing · Board (US App Store)

Play various styles of Mahjong against friends or AI. Offers detailed instructions and tutorials for learning rules and strategies. Supports multiple rule sets and scoring for official Mahjongg League cards.

**Highlights:** Play with friends or bots, Supports American, Chinese, Hong Kong, British Mahjong, In-game instructions and tutorials, Scoring for NMJL and Marvelous Mah Jongg cards, Customizable game rules, Multiplayer room creation

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mahjong 4 Friends Premium | $0.99 | per month |
| Mahjong 4 Friends Premium | $2.99 | per month |
| NMJL Pro | $5.99 | per year |
| Marvelous Pro | $5.99 | per year |
| Chinese Pro | $5.99 | per year |
| Ad-Free | $5.99 | per year |
| Mahjong 4 Friends Premium | $9.99 | per year |
| Mahjong 4 Friends Premium | $19.99 | per year |

**What reviewers like**

- 👍 Great for practice
- 👍 Excellent for learning and improving skills
- 👍 Customizable and feature-rich
- 👍 Helpful for beginners
- 👍 Supports different game modes and card versions

**What reviewers complain about**

- 🐛 Issues with recent updates
- 🔇 Inability to fully mute voice
- 🤖 Unbalanced bot algorithm

**Reported bugs**

- App freezing or crashing after updates
- Suggested hands feature not working with new card

**Requested features**

- Ability to play with real people online
- Keeping score and progress tracking
- Support for special hands in Chinese Mahjong


### Mental Chronometry

[App page](https://appshunter.io/ios/app/mental-chronometry/id1574095844)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mahjong 4 Friends free?

Mahjong 4 Friends is free to download, with in-app purchases available.

### Is Mental Chronometry free?

Mental Chronometry costs $0.99, with no in-app purchases.

### Do Mahjong 4 Friends or Mental Chronometry have ads?

Mahjong 4 Friends shows ads; Mental Chronometry does not.

### Which is updated more often, Mahjong 4 Friends or Mental Chronometry?

Mahjong 4 Friends ships an update monthly, and Mental Chronometry every 42 months. Most recently, Mahjong 4 Friends was updated on October 29, 2026 and Mental Chronometry on October 25, 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.*