# Mariners Log Mobile vs HelmLog

The clearest difference is in-app purchases: Mariners Log Mobile at none against HelmLog's 2. Mariners Log Mobile also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HelmLog sells 2 in-app purchases, starting at $3.99 per month. Mariners Log Mobile asks for nothing beyond the download.

Mariners Log Mobile ships an update every 4 weeks, HelmLog every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Mariners Log Mobile | HelmLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Size | 28 MB | 37 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kengineer Limited](https://appshunter.io/developer/1619488060) | [Elmo Asmussen](https://appshunter.io/developer/1877666273) |

## What reviewers say

### Mariners Log Mobile

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

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

**In-app purchases:** none


### HelmLog

[App page](https://appshunter.io/ios/app/helmlog-sailing-logbook/id6759254008)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HelmLog Pro | $3.99 | per month |
| HelmLog Pro Jaar | $24.99 | per year |


## Frequently asked questions

### Is Mariners Log Mobile free?

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

### Is HelmLog free?

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

### Do Mariners Log Mobile or HelmLog have ads?

Neither Mariners Log Mobile nor HelmLog shows ads.

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

Mariners Log Mobile ships an update every 4 weeks, and HelmLog every 3 weeks. Most recently, Mariners Log Mobile was updated on November 5, 2026 and HelmLog on October 31, 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.*