# EMPASafe vs Nautical Dog Math Helper

The clearest difference is iOS requirement: EMPASafe at 13.0 against Nautical Dog Math Helper's 16.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

EMPASafe ships an update every 2 weeks, Nautical Dog Math Helper weekly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | EMPASafe | Nautical Dog Math Helper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/nautical-dog-math-helper/id6744040776/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 18 MB | 6 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hiades](https://appshunter.io/developer/1565815173) | [Jill Russell](https://appshunter.io/developer/1792014832) |

## What reviewers say

### EMPASafe

[App page](https://appshunter.io/ios/app/empasafe/id6478924445)

**Features:** macOS Compatibility

**In-app purchases:** none


### Nautical Dog Math Helper

[App page](https://appshunter.io/ios/app/nautical-dog-math-helper/id6744040776)

This app simplifies essential maritime calculations for professionals. It offers tools for navigation, maneuvering, and vessel operations, ensuring accuracy and efficiency at sea. Designed for ease of use, it provides critical data even without internet access.

**Highlights:** Rate of Turn (ROT) Calculation, Turn Transfer Computation, RPM and Speed Calculations, Anchor Swing Radius, Distance, Speed, Time (DST), Offline Functionality, Night Mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EMPASafe free?

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

### Is Nautical Dog Math Helper free?

Nautical Dog Math Helper is free to download, with no in-app purchases.

### Do EMPASafe or Nautical Dog Math Helper have ads?

Neither EMPASafe nor Nautical Dog Math Helper shows ads.

### Which is updated more often, EMPASafe or Nautical Dog Math Helper?

EMPASafe ships an update every 2 weeks, and Nautical Dog Math Helper weekly. Most recently, EMPASafe was updated on October 25, 2026 and Nautical Dog Math Helper on October 24, 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.*