# Deepstash vs memoryOS

Deepstash and memoryOS both sit at 4.7 stars, but that hides the real split: 80% of memoryOS's written reviews are positive against 30% of Deepstash's. Deepstash's advantage is update cadence (every 4 days vs every 2 weeks) and chart position (#5 vs #63). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Deepstash sells 14 in-app purchases, starting at $12.99 per month and memoryOS sells 23 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

memoryOS holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Deepstash has 86K ratings behind it against 17K, so its average is the more settled of the two. Written reviews point the same way: 30% of Deepstash's written reviews are positive against 80% of memoryOS's.

Deepstash ships an update every 4 days, memoryOS every 2 weeks. Both last shipped on November 1, 2026.

## The numbers

| Metric | Deepstash | memoryOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (86K ratings)](https://appshunter.io/ios/app/deepstash-smarter-every-day/id1445023295/reviews) | **[4.9 (17K ratings)](https://appshunter.io/ios/app/memoryos-memory-games/id1553283646/reviews)** |
| Number of ratings | **86K** | 17K |
| Positive reviews | 30.2% of reviews | **80.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Best chart rank | **#5** | #63 |
| Size | 160 MB | 231 MB |
| Requires iOS | 16.4 | **15.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Brainstash, Inc](https://appshunter.io/developer/1445023294) | [Encoder Inc.](https://appshunter.io/developer/1524669695) |

## What reviewers say

### Deepstash

[App page](https://appshunter.io/ios/app/deepstash-smarter-every-day/id1445023295)

**Currently charting:** #5 Top Free · Education, #29 Top Grossing · Education (US App Store)

Discover bite-sized knowledge from popular books in just 5 minutes a day. Beautifully designed idea cards condense profound thoughts into memorable, visual insights. Fuel your curiosity and grow smarter with curated content tailored to your interests.

**Highlights:** Bite-sized knowledge cards, Curated insights from popular books, Personalized content feeds, Organize ideas into collections, Share discoveries with friends, Offline access (Pro)

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Subscription | $12.99 | per month |
| Pro Monthly Subscription | $12.99 | per month |
| Pro Monthly Subscription | $19.99 | per month |
| Pro Yearly Subscription | $29.99 | per year |
| Pro 3 Months Subscription | $29.99 | per 3 months |
| Pro Yearly Subscription | $49.99 | per year |
| Pro Yearly Subscription | $59.99 | per year |
| Pro Yearly Subscription | $69.99 | per year |
| Pro Yearly Subscription | $69.99 | per year |
| Pro Yearly Subscription | $79.99 | per year |
| Pro Yearly Subscription | $89.99 | per year |
| Pro Yearly Subscription | $89.99 | per year |
| Pro Yearly Subscription | $99.99 | per year |
| Pro Yearly Subscription | $119.99 | per year |

**What reviewers like**

- 🧠 Helpful for learning and dissociation from social media
- 👍 Smooth interface and good delivery of content
- 🤓 Effective platform for quick self-help and coaching resources
- 📚 Provides access to useful books and articles
- 🧠 Promotes well-being and replaces mindless scrolling

**What reviewers complain about**

- 💰 Aggressive monetization and paywall
- 🤯 Annoying sales tactics and constant prompts to upgrade
- 🤔 Limited functionality in free version
- 🐛 Buggy and crashes frequently
- 🤔 Shallow content and lack of depth

**Reported bugs**

- Login details not working
- Subscription issues and difficulty getting refunds
- Inability to edit or remove saved content
- Frequent crashes and loading issues

**Requested features**

- Add ability to save and organize content without subscription
- Improve search and discovery of relevant content
- Provide more in-depth and diverse content
- Add audio/podcast functionality
- Improve overall user experience and reduce distractions


### memoryOS

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

**Currently charting:** #63 Top Free · Education, #64 Top Grossing · 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


## Frequently asked questions

### Is Deepstash free?

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

### Is memoryOS free?

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

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

memoryOS is rated higher. Deepstash averages 4.7 out of 5 from 86K ratings, while memoryOS averages 4.9 from 17K ratings.

### Do Deepstash or memoryOS have ads?

Neither Deepstash nor memoryOS shows ads.

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

Deepstash ships an update every 4 days, and memoryOS every 2 weeks. Most recently, Deepstash was updated on November 1, 2026 and memoryOS on November 1, 2026.

### Which is more popular, Deepstash or memoryOS?

Deepstash currently peaks at #5 in the App Store charts, and memoryOS at #63. Chart position reflects recent download velocity rather than total install base.

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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.*