# ZeroHarm vs VesselMan

The clearest difference is update cadence: VesselMan at every 5 weeks against ZeroHarm's every 3 months. ZeroHarm's advantage is iOS requirement (13 vs 16.4). 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.

ZeroHarm ships an update every 3 months, VesselMan every 5 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ZeroHarm | VesselMan |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 30 MB | 60 MB |
| Requires iOS | **13** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lloyd's Register Group Services Limited](https://appshunter.io/developer/1191772956) | [VesselMan AS](https://appshunter.io/developer/1465069911) |

## What reviewers say

### ZeroHarm

[App page](https://appshunter.io/ios/app/zeroharm/id1191772957)

Conduct health and safety risk assessments before entering hazardous environments. Get real-time safety information like weather and alerts from colleagues. Designed for organizations with staff in dangerous conditions.

**Highlights:** Task risk assessment, Safety information access, Weather and sea conditions, Colleague alerts, Hazardous environment support

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

**In-app purchases:** none


### VesselMan

[App page](https://appshunter.io/ios/app/vesselman/id1465069912)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ZeroHarm free?

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

### Is VesselMan free?

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

### Do ZeroHarm or VesselMan have ads?

Neither ZeroHarm nor VesselMan shows ads.

### Which is updated more often, ZeroHarm or VesselMan?

ZeroHarm ships an update every 3 months, and VesselMan every 5 weeks. Most recently, ZeroHarm was updated on November 2, 2026 and VesselMan on November 3, 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.*