# Ships Lights vs LogMemorizer

The clearest difference is price: LogMemorizer at Free against Ships Lights's $3.99. LogMemorizer also leads on update cadence (monthly vs every 17 months). Ships Lights's advantage is iOS requirement (10.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

LogMemorizer is free to download; Ships Lights costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ships Lights ships an update every 17 months, LogMemorizer monthly. The most recent releases landed on October 27, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Ships Lights | LogMemorizer |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/ships-lights/id470890169/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Monthly** |
| Monetization | Paid | — |
| Size | 19 MB | 40 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Iver C. Weilbach & Co. A/S](https://appshunter.io/developer/470890172) | [Schaller Messtechnik GmbH](https://appshunter.io/developer/1798242776) |

## What reviewers say

### Ships Lights

[App page](https://appshunter.io/ios/app/ships-lights/id470890169)

Learn and review maritime navigation rules for ships' lights, fog signals, and shapes. This app uses effective learning methods to teach both new and experienced sailors, with levels of increasing challenge and a searchable index.

**Highlights:** Ships' lights, fog signals, and shapes education, Refresher for experienced sailors, Learning tool for new sailors, Searchable index of vessel types, Four levels of increasing challenge, Effective learning methods

**Features:** Vision Pro support

**In-app purchases:** none


### LogMemorizer

[App page](https://appshunter.io/ios/app/logmemorizer/id6755107868)

**In-app purchases:** none


## Frequently asked questions

### Is Ships Lights free?

Ships Lights costs $3.99, with no in-app purchases.

### Is LogMemorizer free?

LogMemorizer is free to download, with no in-app purchases.

### Do Ships Lights or LogMemorizer have ads?

Neither Ships Lights nor LogMemorizer shows ads.

### Which is updated more often, Ships Lights or LogMemorizer?

Ships Lights ships an update every 17 months, and LogMemorizer monthly. Most recently, Ships Lights was updated on October 27, 2026 and LogMemorizer on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*