# Calculator vs MyVessel

The clearest difference is update cadence: MyVessel at monthly against Calculator's every 6 months. Calculator's advantage is iOS requirement (15.0 vs 26.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Calculator ships an update every 6 months, MyVessel monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Calculator | MyVessel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Size | 15 MB | 14 MB |
| Requires iOS | **15.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CLI - Concrete Layer Innovations](https://appshunter.io/developer/1719650130) | [Lucas MARCHE](https://appshunter.io/developer/1896731101) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-cli/id6473743773)

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

**In-app purchases:** none


### MyVessel

[App page](https://appshunter.io/ios/app/myvessel-sea-log/id6770293456)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator free?

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

### Is MyVessel free?

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

### Do Calculator or MyVessel have ads?

Neither Calculator nor MyVessel shows ads.

### Which is updated more often, Calculator or MyVessel?

Calculator ships an update every 6 months, and MyVessel monthly. Most recently, Calculator was updated on October 25, 2026 and MyVessel on October 25, 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.*