# Serenity EHS vs Polynow

The clearest difference is update cadence: Polynow at every 3 weeks against Serenity EHS's every 2 months. 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.

Serenity EHS ships an update every 2 months, Polynow every 3 weeks. The most recent releases landed on July 17, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Serenity EHS | Polynow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/serenity-ehs/id6479657507/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 47 MB | 103 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Serenity EHS, Inc.](https://appshunter.io/developer/1736781998) | [Bionis LLC](https://appshunter.io/developer/1884590348) |

## What reviewers say

### 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


### Polynow

[App page](https://appshunter.io/ios/app/polynow-japan-interpreters/id6760467356)

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

**In-app purchases:** none


## Frequently asked questions

### Is Serenity EHS free?

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

### Is Polynow free?

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

### Do Serenity EHS or Polynow have ads?

Neither Serenity EHS nor Polynow shows ads.

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

Serenity EHS ships an update every 2 months, and Polynow every 3 weeks. Most recently, Serenity EHS was updated on July 17, 2026 and Polynow on September 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*