Mahjong 4 Friends vs Mental Chronometry
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Mahjong 4 Friends
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.
- 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
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Play real American or Chinese Mahjong — free, anytime, with friends or AI players. Play on your own against AI players, invite friends for a full table, or mix both — Mahjong 4 Friends brings the full table experience online. You'll be playing and practicing mahjong in seconds. AMERICAN MAHJONG — JUST LIKE YOUR WEEKLY GAME Play with NMJL (National Mah Jongg League) 2026 and Marvelous cards, complete with Charleston rounds, jokers, and authentic scoring. Everything works exactly the way you expect. CHINESE, HONG KONG & BRITISH VARIANTS Switch styles anytime. Play 13-tile formats with pongs, kongs, chows, and pairs — all fully supported with proper rules. ALWAYS HAVE A GAME Play with friends or fill empty seats with AI players — no waiting for a full table. You can also join public tables to play others. GREAT FOR BEGINNERS AND REGULARS Built-in tips and suggestions help new players learn naturally, without slowing the game down for everyone else. PLAY ANYWHERE Enjoy smooth real-time multiplayer across devices with no complicated setup. Start playing in no time. FREE AND UNLIMITED No paywalls for continued play. No time limits. Play online with friends or offline with AI players, and customize your settings to play your way. Have feedback or want a new feature? We actually read our emails — reach us at support@mahjong4friends.com. We typically respond within 24 hours. Your Mahjong table is now always open. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Mental Chronometry
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Stop the wheels at the right time to get the best score.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Mahjong 4 Friends | Mental Chronometry |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.9 (26K ratings) — better | — |
| Positive reviews | 75.4% of reviews | — |
| Number of ratings | 26K — better | — |
| Update frequency | Monthly — better | Every 42 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #18 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 68 MB | 201 MB |
| Age rating | 12+ | 4+ |
| Developer | Unwind Media, LLC | Paul Cohen |
Bugs and requests
Mahjong 4 Friends
Reported bugs
2 issues- App freezing or crashing after updates
- Suggested hands feature not working with new card
Requested features
3 requests- Ability to play with real people online
- Keeping score and progress tracking
- Support for special hands in Chinese Mahjong
Mental Chronometry
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mahjong 4 Friends
- Mahjong 4 Friends Premium$0.991 Month
- Mahjong 4 Friends Premium$2.991 Month
- NMJL Pro$5.991 Year
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- Marvelous Pro$5.991 Year
- Chinese Pro$5.991 Year
- Ad-Free$5.991 Year
- Mahjong 4 Friends Premium$9.991 Year
- Mahjong 4 Friends Premium$19.991 Year
Mental Chronometry
No in-app purchases
Questions
Is Mahjong 4 Friends free?
Is Mental Chronometry free?
Do Mahjong 4 Friends or Mental Chronometry have ads?
Which is updated more often, Mahjong 4 Friends or Mental Chronometry?
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