# memoryOS vs GhostBoard

The clearest difference is in-app purchases: GhostBoard at none against memoryOS's 28. GhostBoard also leads on review sentiment (100% vs 80%) and iOS requirement (13.0 vs 15.2). memoryOS's advantage is ratings volume (16K vs 4) and chart position (#51 vs unranked). On price, rating, 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. GhostBoard asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for memoryOS against 5.0 for GhostBoard. That said, the two scores are not equally well evidenced: memoryOS has 16K ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 80% of memoryOS's written reviews are positive against 100% of GhostBoard's.

memoryOS ships an update every 3 weeks, GhostBoard fortnightly. The most recent releases landed on October 13, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | memoryOS | GhostBoard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (16K ratings)](https://appshunter.io/ios/app/memoryos-memory-games/id1553283646/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ghostboard/id6742034420/reviews)** |
| Number of ratings | **16K** | 4 |
| Positive reviews | 80.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#51** | — |
| Size | 248 MB | 11 MB |
| Requires iOS | 15.2 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Encoder Inc.](https://appshunter.io/developer/1524669695) | [GHOSTBOARD LLC](https://appshunter.io/developer/1796477199) |

## What reviewers say

### memoryOS

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

**Currently charting:** #51 Top Grossing · Education, #90 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


### GhostBoard

[App page](https://appshunter.io/ios/app/ghostboard/id6742034420)

Access institutional-level financial data and AI-powered trading tools. Gain insights into stock options and connect with a community of successful traders. Elevate your investment strategy with advanced analytics.

**Highlights:** Institutional-level data, AI-powered trading tools, Real-time analytics, Stock options insights, Trader community access, Portfolio growth tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is memoryOS free?

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

### Is GhostBoard free?

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

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

GhostBoard is rated higher. memoryOS averages 4.9 out of 5 from 16K ratings, while GhostBoard averages 5.0 from 4 ratings.

### Do memoryOS or GhostBoard have ads?

Neither memoryOS nor GhostBoard shows ads.

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

memoryOS ships an update every 3 weeks, and GhostBoard fortnightly. Most recently, memoryOS was updated on October 13, 2026 and GhostBoard on September 27, 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.*