# Sea Breeze vs ASTM 54 B

The clearest difference is review sentiment: Sea Breeze at 100% against ASTM 54 B's 0%. Sea Breeze also leads on price ($0.29 vs $9.99). ASTM 54 B's advantage is update cadence (every 6 months vs every 13 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Sea Breeze costs $0.29 and ASTM 54 B $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sea Breeze ships an update every 13 months, ASTM 54 B every 6 months. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sea Breeze | ASTM 54 B |
| --- | --- | --- |
| Price | **$0.29** | $9.99 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vladyslav Yarmak](https://appshunter.io/developer/1456545549) | [Oleksii Nezhalskyi](https://appshunter.io/developer/1687730603) |

## What reviewers say

### Sea Breeze

[App page](https://appshunter.io/ios/app/sea-breeze/id6445898579)

This application calculates true wind conditions using a ship's heading and speed, along with relative wind data. It provides accurate true wind direction and speed for maritime navigation.

**Highlights:** True wind calculation, Ship heading input, Ship speed input, Relative wind direction input, Relative wind speed input

**Features:** Vision Pro support

**In-app purchases:** none


### ASTM 54 B

[App page](https://appshunter.io/ios/app/astm-54-b/id6449903055)

This application calculates fuel weight for ships based on ASTM 54 B standards. Users input volume and observed temperature to receive precise calculations.

**Highlights:** ASTM 54 B fuel weight calculation, Input volume and temperature, Automatic calculation, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Sea Breeze free?

Sea Breeze costs $0.29, with no in-app purchases.

### Is ASTM 54 B free?

ASTM 54 B costs $9.99, with no in-app purchases.

### Do Sea Breeze or ASTM 54 B have ads?

Neither Sea Breeze nor ASTM 54 B shows ads.

### Which is updated more often, Sea Breeze or ASTM 54 B?

Sea Breeze ships an update every 13 months, and ASTM 54 B every 6 months. Most recently, Sea Breeze was updated on October 9, 2026 and ASTM 54 B on October 24, 2026.

---

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