# SeaRoll vs Engineer's Unit Converter

The clearest difference is ads: SeaRoll at none against Engineer's Unit Converter's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. SeaRoll sells 1 one-off in-app purchase and Engineer's Unit Converter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

SeaRoll ships an update every 3 weeks, Engineer's Unit Converter monthly. The most recent releases landed on October 15, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | SeaRoll | Engineer's Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 7 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Vladyslav Yarmak](https://appshunter.io/developer/1456545549) | [Jose Gerardo Palma Duran](https://appshunter.io/developer/1873843788) |

## What reviewers say

### SeaRoll

[App page](https://appshunter.io/ios/app/searoll/id6756269783)

This application provides a real-time display of a vessel's rolling angle, allowing users to record and review sessions during navigation. It's designed for simplicity and readability, enabling quick reporting and discussion of roll data.

**Highlights:** Live roll angle display, One-tap roll recording, Playback and review of recorded sessions, Export and share recordings, Simple and readable interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Logo | $0.99 | one-time |


### Engineer's Unit Converter

[App page](https://appshunter.io/ios/app/engineers-unit-converter/id6758744042)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is SeaRoll free?

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

### Is Engineer's Unit Converter free?

Engineer's Unit Converter is free to download, with in-app purchases available.

### Do SeaRoll or Engineer's Unit Converter have ads?

Engineer's Unit Converter shows ads; SeaRoll does not.

### Which is updated more often, SeaRoll or Engineer's Unit Converter?

SeaRoll ships an update every 3 weeks, and Engineer's Unit Converter monthly. Most recently, SeaRoll was updated on October 15, 2026 and Engineer's Unit Converter on October 26, 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.*