# memoryOS vs Rabbit Hole AI

The clearest difference is in-app purchases: Rabbit Hole AI at none against memoryOS's 10. Rabbit Hole AI also leads on iOS requirement (13.0 vs 15.2). memoryOS's advantage is ratings volume (17K vs 1) and update cadence (fortnightly vs every 5 weeks). On price, rating, ads and device support there is nothing between them.

Both are free to download. memoryOS sells 9 in-app purchases, starting at $5.99 per month. Rabbit Hole AI 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 Rabbit Hole AI. That said, the two scores are not equally well evidenced: memoryOS has 17K ratings behind it against 1, so its average is the more settled of the two.

memoryOS ships an update fortnightly, Rabbit Hole AI every 5 weeks. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | memoryOS | Rabbit Hole AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (17K ratings)](https://appshunter.io/ios/app/memoryos-memory-games/id1553283646/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rabbit-hole-ai/id6692615831/reviews)** |
| Number of ratings | **17K** | 1 |
| Positive reviews | 80.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#58** | — |
| Size | 232 MB | 26 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) | [Manan Bhalodia](https://appshunter.io/developer/1706036881) |

## What reviewers say

### memoryOS

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

**Currently charting:** #58 Top Grossing · Education, #91 Top Free · Education (US App Store)

Enhance your memory with interactive lessons and a 3D virtual mind palace game. This app uses scientifically proven techniques like spaced repetition to boost long-term memory storage and knowledge retention. It's designed to make memorization skills joyful and effective for everyone.

**Highlights:** Interactive memory lessons, 3D Virtual Mind Palaces, Spaced repetition system, Gamified learning, Memorize names, lists, numbers, and more, Advanced study techniques

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Monthly Plan | $5.99 | per month |
| Essential Weekly Plan | $6.99 | per 7 days |
| Essential Monthly Plan | $15.99 | per month |
| Expert Monthly Plan | $27.99 | per month |
| Essential Annual Plan | $89.99 | per year |
| Expert Annual Plan | $148.99 | per year |
| Expert Annual Plan | $149.99 | per year |
| Expert Annual Plan | $159.99 | per year |
| Expert Annual Plan | $159.99 | per year |

**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


### Rabbit Hole AI

[App page](https://appshunter.io/ios/app/rabbit-hole-ai/id6692615831)

This AI-powered learning app offers daily trivia, infinite knowledge exploration across various subjects, and global leaderboards. It's designed to challenge your mind and expand your understanding of science, history, AI, and more through interactive content and personalized recommendations.

**Highlights:** Daily trivia challenges, Infinite topic exploration, AI-powered recommendations, Global leaderboards, Daily updated content, Interactive learning design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is memoryOS free?

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

### Is Rabbit Hole AI free?

Rabbit Hole AI is free to download, with no in-app purchases.

### Which has better reviews, memoryOS or Rabbit Hole AI?

Rabbit Hole AI is rated higher. memoryOS averages 4.9 out of 5 from 17K ratings, while Rabbit Hole AI averages 5.0 from 1 ratings.

### Do memoryOS or Rabbit Hole AI have ads?

Neither memoryOS nor Rabbit Hole AI shows ads.

### Which is updated more often, memoryOS or Rabbit Hole AI?

memoryOS ships an update fortnightly, and Rabbit Hole AI every 5 weeks. Most recently, memoryOS was updated on November 6, 2026 and Rabbit Hole AI on October 30, 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.*