# Ontrak vs ZeroHarm

The clearest difference is review sentiment: ZeroHarm at 50% against Ontrak's 0%. ZeroHarm also leads on iOS requirement (13 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Ontrak | ZeroHarm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/ontrak/id1107554721/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 21 MB | 30 MB |
| Requires iOS | 15.6 | **13** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Contra Agency](https://appshunter.io/developer/886215644) | [Lloyd's Register Group Services Limited](https://appshunter.io/developer/1191772956) |

## What reviewers say

### Ontrak

[App page](https://appshunter.io/ios/app/ontrak/id1107554721)

Manage upcoming shifts and review past time sheets. This application is designed for candidates of OnTrak Recruitment to stay organized and informed about their work schedules.

**Highlights:** Shift management, Time sheet tracking, Candidate organization, Schedule overview

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Ontrak free?

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

### Is ZeroHarm free?

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

### Do Ontrak or ZeroHarm have ads?

Neither Ontrak nor ZeroHarm shows ads.

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

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