# listerCompass vs memoryOS

The clearest difference is price: memoryOS at Free against listerCompass's $5.99. memoryOS also leads on rating (4.9 vs 1.0) and review sentiment (80% vs 50%). listerCompass's advantage is in-app purchases (none vs 28). On ads and device support there is nothing between them.

memoryOS is free to download; listerCompass costs $5.99 up front. memoryOS sells 23 in-app purchases, starting at $3.99 per 7 days. listerCompass asks for nothing beyond the download.

memoryOS holds the better App Store score, 4.9 against 1.0. 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. Written reviews point the same way: 50% of listerCompass's written reviews are positive against 80% of memoryOS's.

listerCompass ships an update every 5 months, memoryOS every 2 weeks. The most recent releases landed on July 4, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | listerCompass | memoryOS |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/listercompass/id532918731/reviews) | **[4.9 (17K ratings)](https://appshunter.io/ios/app/memoryos-memory-games/id1553283646/reviews)** |
| Number of ratings | 1 | **17K** |
| Positive reviews | 50.0% of reviews | **80.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#67** |
| Size | 7 MB | 248 MB |
| Requires iOS | 26.0 | **15.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gordon Lister](https://appshunter.io/developer/1725074221) | [Encoder Inc.](https://appshunter.io/developer/1524669695) |

## What reviewers say

### listerCompass

[App page](https://appshunter.io/ios/app/listercompass/id532918731)

This app is a stereographic compass designed for structural geologists. It allows users to measure and record foliations and lineations in the field, log descriptions, and export data in various formats, including KML for Google Earth.

**Highlights:** Measure foliations and lineations, Record traverse information on a map, Log on-the-fly data descriptions, Export data in KML and other formats, Supports UTM and latitude-longitude, Multiple data format options

**Features:** macOS Compatibility

**In-app purchases:** none


### memoryOS

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

**Currently charting:** #67 Top Grossing · Education, #102 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


## Frequently asked questions

### Is listerCompass free?

listerCompass costs $5.99, with no in-app purchases.

### Is memoryOS free?

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

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

memoryOS is rated higher. listerCompass averages 1.0 out of 5 from 1 ratings, while memoryOS averages 4.9 from 17K ratings.

### Do listerCompass or memoryOS have ads?

Neither listerCompass nor memoryOS shows ads.

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

listerCompass ships an update every 5 months, and memoryOS every 2 weeks. Most recently, listerCompass was updated on July 4, 2026 and memoryOS on October 19, 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.*