# MESPAS TSM vs Sea Breeze

The clearest difference is price: MESPAS TSM at Free against Sea Breeze's $0.29. MESPAS TSM also leads on update cadence (every 2 months vs every 13 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

MESPAS TSM is free to download; Sea Breeze costs $0.29 up front. Neither carries in-app purchases, so what you see is what you pay.

MESPAS TSM ships an update every 2 months, Sea Breeze every 13 months. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | MESPAS TSM | Sea Breeze |
| --- | --- | --- |
| Price | **Free** | $0.29 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 13 months |
| Monetization | — | Paid |
| Size | 34 MB | 1 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MESPAS AG](https://appshunter.io/developer/1073594128) | [Vladyslav Yarmak](https://appshunter.io/developer/1456545549) |

## What reviewers say

### MESPAS TSM

[App page](https://appshunter.io/ios/app/mespas-tsm/id1598358369)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is MESPAS TSM free?

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

### Is Sea Breeze free?

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

### Do MESPAS TSM or Sea Breeze have ads?

Neither MESPAS TSM nor Sea Breeze shows ads.

### Which is updated more often, MESPAS TSM or Sea Breeze?

MESPAS TSM ships an update every 2 months, and Sea Breeze every 13 months. Most recently, MESPAS TSM was updated on October 21, 2026 and Sea Breeze on October 9, 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.*