# memoryOS vs CellWalk

The clearest difference is ratings volume: memoryOS at 16K against CellWalk's 69. memoryOS also leads on chart position (#56 vs unranked) and iOS requirement (15.2 vs 26.0). CellWalk's advantage is review sentiment (92% vs 80%). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. memoryOS sells 20 in-app purchases, starting at $3.99 per 7 days and CellWalk sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for memoryOS against 4.9 for CellWalk. That said, the two scores are not equally well evidenced: memoryOS has 16K ratings behind it against 69, 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 92% of CellWalk's.

memoryOS ships an update every 3 weeks, CellWalk monthly. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | memoryOS | CellWalk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (16K ratings)](https://appshunter.io/ios/app/memoryos-memory-games/id1553283646/reviews) | [4.9 (69 ratings)](https://appshunter.io/ios/app/cellwalk/id1627776848/reviews) |
| Number of ratings | **16K** | 69 |
| Positive reviews | 80.4% of reviews | **91.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#56** | — |
| Size | 248 MB | 635 MB |
| Requires iOS | **15.2** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Vision Pro |
| Age rating | 4+ | 4+ |
| Developer | [Encoder Inc.](https://appshunter.io/developer/1524669695) | [Ako Biotica Inc.](https://appshunter.io/developer/1895703608) |

## What reviewers say

### memoryOS

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

**Currently charting:** #56 Top Grossing · Education, #123 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 (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Weekly Plan | $3.99 | per 7 days |
| Student Monthly Plan | $4.99 | 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 |
| Student 3 Months Plan | $19.99 | per 3 months |
| Expert Monthly Plan | $24.99 | 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 | $149.99 | 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


### CellWalk

[App page](https://appshunter.io/ios/app/cellwalk/id1627776848)

Explore the intricate world of cells in a 3D environment, from the overall structure down to molecular details. Tap on terms to receive clear, contextual explanations powered by on-device AI, adapting to your learning level. Designed for students and educators to foster a deeper understanding of cell biology.

**Highlights:** 3D cell exploration, On-device AI definitions, Multi-level explanations, Interactive concept chains, Touch-first navigation, High-fidelity visuals

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lessons | $14.99 | one-time |

**What reviewers like**

- ✨ Stunning visualizations
- 🔬 Incredible detail
- 🧠 Informative content
- 👍 Easy to use
- 🚀 Smooth performance

**What reviewers complain about**

- ⚠️ Misleading information
- 📚 Limited content
- 🖼️ Tiny window view
- 😵 Nauseating renderer
- 🐛 Buggy performance

**Reported bugs**

- ATP synthase described backwards
- Renderer noise causes nausea
- Buggy and low framerate
- Renderer not responsive to head movements

**Requested features**

- More cells to explore (eukaryotic, mammalian, computer cells)
- More content and depth
- Expand on descriptions with an 'expand on' feature
- Add tutorials for new users
- Add color to highlighted text for easy reference


## Frequently asked questions

### Is memoryOS free?

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

### Is CellWalk free?

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

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

memoryOS and CellWalk are both rated 4.9 out of 5 on the App Store, from 16K and 69 ratings respectively.

### Do memoryOS or CellWalk have ads?

Neither memoryOS nor CellWalk shows ads.

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

memoryOS ships an update every 3 weeks, and CellWalk monthly. Most recently, memoryOS was updated on September 25, 2026 and CellWalk on September 21, 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.*