# Boat Units vs Mariners Log Mobile

The clearest difference is update cadence: Boat Units at every 3 days against Mariners Log Mobile's every 2 weeks. Mariners Log Mobile's advantage is iOS requirement (13.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Boat Units ships an update every 3 days, Mariners Log Mobile every 2 weeks. The most recent releases landed on September 9, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Boat Units | Mariners Log Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Size | 7 MB | 29 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marcus Johansson](https://appshunter.io/developer/1659201231) | [Kengineer Limited](https://appshunter.io/developer/1619488060) |

## What reviewers say

### Boat Units

[App page](https://appshunter.io/ios/app/boat-units/id1659201229)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mariners Log Mobile

[App page](https://appshunter.io/ios/app/mariners-log-mobile/id6759027844)

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

**In-app purchases:** none


## Frequently asked questions

### Is Boat Units free?

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

### Is Mariners Log Mobile free?

Mariners Log Mobile is free to download, with no in-app purchases.

### Do Boat Units or Mariners Log Mobile have ads?

Neither Boat Units nor Mariners Log Mobile shows ads.

### Which is updated more often, Boat Units or Mariners Log Mobile?

Boat Units ships an update every 3 days, and Mariners Log Mobile every 2 weeks. Most recently, Boat Units was updated on September 9, 2026 and Mariners Log Mobile on September 21, 2026.

---

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