# memoryOS vs Mahjpedia

The clearest difference is rating: memoryOS at 4.9 against Mahjpedia's 4.0. memoryOS also leads on ratings volume (17K vs 8) and chart position (#53 vs unranked). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. memoryOS sells 23 in-app purchases, starting at $3.99 per 7 days and Mahjpedia sells 4 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.

memoryOS holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: memoryOS has 17K ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 80% of memoryOS's written reviews are positive against 83% of Mahjpedia's, so the app with the better star average is not the one people write more warmly about.

memoryOS ships an update every 2 weeks, Mahjpedia fortnightly. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | memoryOS | Mahjpedia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (17K ratings)](https://appshunter.io/ios/app/memoryos-memory-games/id1553283646/reviews)** | [4.0 (8 ratings)](https://appshunter.io/ios/app/mahjpedia/id6450915642/reviews) |
| Number of ratings | **17K** | 8 |
| Positive reviews | 80.4% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#53** | — |
| Size | 248 MB | 61 MB |
| Requires iOS | **15.2** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Encoder Inc.](https://appshunter.io/developer/1524669695) | [The Mahj Connection, LLC](https://appshunter.io/developer/1695684787) |

## What reviewers say

### memoryOS

[App page](https://appshunter.io/ios/app/memoryos-memory-games/id1553283646)

**Currently charting:** #53 Top Grossing · Education, #103 Top Free · Education (US App Store)

Enhance your memory and focus with interactive lessons and a virtual mind palace game. Learn scientifically proven techniques to improve knowledge retention and recall a wide range of information, from names and numbers to complex data and entire books.

**Highlights:** Interactive bite-sized lessons, Virtual Mind Palaces game, Spaced repetition system, Scientifically proven techniques, Improve knowledge retention, Memorize diverse information

**Features:** Vision Pro support

**In-app purchases (23)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Weekly Plan | $3.99 | per 7 days |
| Student Monthly Plan | $5.99 | per month |
| Expert Weekly Plan | $6.99 | per 7 days |
| Essential Weekly Plan | $6.99 | per 7 days |
| Essential Monthly Plan | $14.99 | per month |
| Essential Monthly Plan | $14.99 | per month |
| Essential Monthly Plan | $16.99 | per month |
| Student 3 Months Plan | $19.99 | per 3 months |
| Expert Monthly Plan | $24.99 | per month |
| Expert Monthly Plan | $29.99 | per month |
| Expert 3 Months Plan | $49.99 | per 3 months |
| Expert 3 Months Plan | $69.99 | per 3 months |
| Expert 6 Months Plan | $89.99 | per 6 months |
| Essential Annual Plan | $89.99 | per year |
| Essential Annual Plan | $89.99 | per year |
| Essential Annual Plan | $89.99 | per year |
| Expert Annual Plan | $148.99 | per year |
| Expert Annual Plan | $149.99 | per year |
| Expert Annual Plan | $174.99 | per year |
| Expert Annual Plan | $174.99 | per year |
| 10 Hearts | $0.99 | one-time |
| 10 Loci Coins | $2.99 | one-time |
| 50 Loci Coins | $14.99 | one-time |

**What reviewers like**

- 🚀 Effective memory techniques
- 👍 Interactive and engaging
- 💡 Innovative use of memory palaces
- 🤩 Impressive results in a short time
- 🎉 Fun and enjoyable to use

**What reviewers complain about**

- 💰 Expensive subscription model
- 🐛 Buggy and crashes frequently
- 🤔 Confusing navigation and UI
- 🔒 Lack of transparency around pricing
- 🙄 Aggressive upselling and marketing tactics

**Reported bugs**

- Login issues and account management problems
- Frequent crashes and app instability
- Navigation and UI elements not working as expected
- Syncing issues between devices and lost progress
- Connectivity problems when using cellular data

**Requested features**

- More free content and lessons
- Ability to create custom memory palaces
- Better progress tracking and analytics
- Integration with other learning/productivity apps
- Offline mode for lessons and memory palaces


### Mahjpedia

[App page](https://appshunter.io/ios/app/mahjpedia/id6450915642)

Learn and master American Mah Jongg with this comprehensive educational app. Access lessons, guides, and premium features to enhance your gameplay and understanding of the game. Enjoy seamless access across devices with account registration.

**Highlights:** American Mah Jongg education, Comprehensive lessons and guides, Premium features unlock, Cross-device subscription access, Account registration for restoration

**Features:** Apple Wallet

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mahjpedia | $4.99 | per year |
| Mahjpedia | $0.99 | one-time |
| Mahjpedia | $4.99 | one-time |
| Mahjpedia | $44.99 | one-time |


## Frequently asked questions

### Is memoryOS free?

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

### Is Mahjpedia free?

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

### Which has better reviews, memoryOS or Mahjpedia?

memoryOS is rated higher. memoryOS averages 4.9 out of 5 from 17K ratings, while Mahjpedia averages 4.0 from 8 ratings.

### Do memoryOS or Mahjpedia have ads?

Neither memoryOS nor Mahjpedia shows ads.

### Which is updated more often, memoryOS or Mahjpedia?

memoryOS ships an update every 2 weeks, and Mahjpedia fortnightly. Most recently, memoryOS was updated on October 23, 2026 and Mahjpedia on October 10, 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.*