# Galvanic Fatigue Calculator vs CH16

The clearest difference is in-app purchases: Galvanic Fatigue Calculator at none against CH16's 2. Galvanic Fatigue Calculator also leads on ads (none vs shown). CH16's advantage is iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. CH16 sells 2 in-app purchases, starting at $0.99 per month. Galvanic Fatigue Calculator asks for nothing beyond the download.

## The numbers

| Metric | Galvanic Fatigue Calculator | CH16 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 80 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PIERO ZUCCHELLI](https://appshunter.io/developer/1874253171) | [Global SAR Hub](https://appshunter.io/developer/1888797457) |

## What reviewers say

### Galvanic Fatigue Calculator

[App page](https://appshunter.io/ios/app/galvanic-fatigue-calculator/id6759550165)

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

**In-app purchases:** none


### CH16

[App page](https://appshunter.io/ios/app/ch16/id6761360179)

This maritime safety app provides instant access to global rescue coordination centers and features tools for generating distress messages and planning voyages. It offers real-time location tracking for man overboard situations and works offline, ensuring safety at sea.

**Highlights:** Global maritime rescue center directory, Interactive SRR zone map, GMDSS-compliant distress message generator, Man Overboard (MOB) mode with GPS tracking, Passage Plan for voyage declaration, Offline functionality, Multilingual support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CH16 Pro | $0.99 | per month |
| CH16 Pro Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is Galvanic Fatigue Calculator free?

Galvanic Fatigue Calculator is free to download, with no in-app purchases.

### Is CH16 free?

CH16 is free to download, with in-app purchases available.

### Do Galvanic Fatigue Calculator or CH16 have ads?

CH16 shows ads; Galvanic Fatigue Calculator does not.

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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.*