# CHLOREP vs Serenity EHS

The clearest difference is update cadence: Serenity EHS at every 2 months against CHLOREP's every 5 months. Serenity EHS also leads on iOS requirement (15.1 vs 17.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for CHLOREP against 5.0 for Serenity EHS. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

CHLOREP ships an update every 5 months, Serenity EHS every 2 months. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | CHLOREP | Serenity EHS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/chlorep/id1490929632/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/serenity-ehs/id6479657507/reviews) |
| Number of ratings | 2 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 61 MB | 47 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chlorine Institute](https://appshunter.io/developer/1490929631) | [Serenity EHS, Inc.](https://appshunter.io/developer/1736781998) |

## What reviewers say

### CHLOREP

[App page](https://appshunter.io/ios/app/chlorep/id1490929632)

This app provides rapid access to critical information and expert support for chlorine emergencies. It connects responders with industry expertise and resources for effective incident management. Designed for a limited group of authorized users.

**Highlights:** Emergency response information, Expert support via telephone, Deployment of emergency equipment, Access to CHLOREP Handbook, Team contact information, Network of response teams

**Features:** macOS Compatibility

**In-app purchases:** none


### Serenity EHS

[App page](https://appshunter.io/ios/app/serenity-ehs/id6479657507)

This app provides on-the-go professionals with instant access to critical Environmental Health and Safety (EHS) information and tools. It facilitates task management, real-time reporting of findings and hazards, and structured safety inspections. An AI-powered CoPilot offers intelligent recommendations for issue resolution.

**Highlights:** Instant EHS Information Access, Task Management and Creation, Real-time Findings and Reporting, Mobile Safety Inspections, Hazard Tracking and Resolution, AI-Powered CoPilot for Issue Resolution, Access Management

**In-app purchases:** none


## Frequently asked questions

### Is CHLOREP free?

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

### Is Serenity EHS free?

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

### Which has better reviews, CHLOREP or Serenity EHS?

CHLOREP and Serenity EHS are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do CHLOREP or Serenity EHS have ads?

Neither CHLOREP nor Serenity EHS shows ads.

### Which is updated more often, CHLOREP or Serenity EHS?

CHLOREP ships an update every 5 months, and Serenity EHS every 2 months. Most recently, CHLOREP was updated on September 25, 2026 and Serenity EHS on September 18, 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.*