# memoryOS vs DABT Toxicology Board Exam

The clearest difference is rating: memoryOS at 4.9 against DABT Toxicology Board Exam's 4.5. memoryOS also leads on ratings volume (17K vs 2) and chart position (#57 vs unranked). DABT Toxicology Board Exam's advantage is review sentiment (100% vs 80%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. memoryOS sells 9 in-app purchases, starting at $5.99 per month and DABT Toxicology Board Exam sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

memoryOS holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: memoryOS has 17K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 80% of memoryOS's written reviews are positive against 100% of DABT Toxicology Board Exam's, so the app with the better star average is not the one people write more warmly about.

memoryOS ships an update fortnightly, DABT Toxicology Board Exam every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | memoryOS | DABT Toxicology Board Exam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (17K ratings)](https://appshunter.io/ios/app/memoryos-memory-games/id1553283646/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/dabt-toxicology-board-exam/id6777578355/reviews) |
| Number of ratings | **17K** | 2 |
| Positive reviews | 80.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#57** | — |
| Size | 232 MB | 44 MB |
| Requires iOS | 15.2 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Encoder Inc.](https://appshunter.io/developer/1524669695) | [EXAMCERT PTY LTD](https://appshunter.io/developer/1830664214) |

## What reviewers say

### memoryOS

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

**Currently charting:** #57 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


### DABT Toxicology Board Exam

[App page](https://appshunter.io/ios/app/dabt-toxicology-board-exam/id6777578355)

Prepare for the American Board of Toxicology exam with a comprehensive resource. Features over 1800 practice questions, detailed explanations, and exam simulations. Offers lifetime access and free updates to help you pass on your first attempt.

**Highlights:** 1800+ practice questions, Detailed explanations, Online mock exams, Offline mode, Progress tracking, Lifetime access & updates

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 200 AI Credits | $1.99 | one-time |
| Unlock Premium | $5.99 | one-time |


## Frequently asked questions

### Is memoryOS free?

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

### Is DABT Toxicology Board Exam free?

DABT Toxicology Board Exam is free to download, with in-app purchases available.

### Which has better reviews, memoryOS or DABT Toxicology Board Exam?

memoryOS is rated higher. memoryOS averages 4.9 out of 5 from 17K ratings, while DABT Toxicology Board Exam averages 4.5 from 2 ratings.

### Do memoryOS or DABT Toxicology Board Exam have ads?

Neither memoryOS nor DABT Toxicology Board Exam shows ads.

### Which is updated more often, memoryOS or DABT Toxicology Board Exam?

memoryOS ships an update fortnightly, and DABT Toxicology Board Exam every 3 weeks. Most recently, memoryOS was updated on November 5, 2026 and DABT Toxicology Board Exam on October 31, 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.*