# memoryOS vs PeptideU

The clearest difference is ratings volume: memoryOS at 17K against PeptideU's 16. memoryOS also leads on chart position (#60 vs unranked). PeptideU's advantage is review sentiment (100% vs 80%). 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 and PeptideU sells 2 in-app purchases, starting at $9.99 per month. 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 5.0 for PeptideU. That said, the two scores are not equally well evidenced: memoryOS has 17K ratings behind it against 16, 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 PeptideU's.

memoryOS ships an update every 2 weeks, PeptideU every 11 days. The most recent releases landed on October 21, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | memoryOS | PeptideU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (17K ratings)](https://appshunter.io/ios/app/memoryos-memory-games/id1553283646/reviews) | **[5.0 (16 ratings)](https://appshunter.io/ios/app/peptideu/id6790272971/reviews)** |
| Number of ratings | **17K** | 16 |
| Positive reviews | 80.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | **#60** | — |
| Size | 248 MB | 64 MB |
| Requires iOS | **15.2** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Encoder Inc.](https://appshunter.io/developer/1524669695) | [Paul Clotar](https://appshunter.io/developer/6790272974) |

## What reviewers say

### memoryOS

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

**Currently charting:** #60 Top Grossing · Education, #103 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


### PeptideU

[App page](https://appshunter.io/ios/app/peptideu/id6790272971)

This app offers a structured curriculum and AI-powered explanations about peptides, grounded in scientific research. It also provides a private log for personal research and a community space for discussion. Premium features include COA scanning and live coaching.

**Highlights:** AI-powered peptide explanations, Structured video curriculum, Evidence-based peptide library, Private research log, COA scanner, Live coaching sessions, Community discussion space

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PeptideU Premium Monthly | $9.99 | per month |
| PeptideU Premium Yearly | $99.99 | per year |


## Frequently asked questions

### Is memoryOS free?

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

### Is PeptideU free?

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

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

PeptideU is rated higher. memoryOS averages 4.9 out of 5 from 17K ratings, while PeptideU averages 5.0 from 16 ratings.

### Do memoryOS or PeptideU have ads?

Neither memoryOS nor PeptideU shows ads.

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

memoryOS ships an update every 2 weeks, and PeptideU every 11 days. Most recently, memoryOS was updated on October 21, 2026 and PeptideU on October 12, 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.*