# MyECS vs Stack Testers Friend

The clearest difference is review sentiment: Stack Testers Friend at 100% against MyECS's 11%. Stack Testers Friend also leads on iOS requirement (13.0 vs 16.0). 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.

MyECS ships an update every 8 months, Stack Testers Friend every 7 months. The most recent releases landed on September 30, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | MyECS | Stack Testers Friend |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 11.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 7 months** |
| Monetization | Free | Free |
| Size | 37 MB | 33 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JIB Limited](https://appshunter.io/developer/1322021887) | [Lewis Holmes](https://appshunter.io/developer/1454834389) |

## What reviewers say

### MyECS

[App page](https://appshunter.io/ios/app/myecs/id1322021888)

Access your ECS card information, application status, and financial history on the go. This app provides a virtual card with a QR code for site access and allows you to manage your profile and professional development reports.

**Highlights:** Virtual ECS card with QR code, Real-time card status updates, Financial history and receipt downloads, CPD report generation, Profile editing, Application status notifications, HSE status overview

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

**In-app purchases:** none


### Stack Testers Friend

[App page](https://appshunter.io/ios/app/stack-testers-friend/id1454834390)

This mobile toolkit provides essential on-site calculations for stack testers. Quickly perform gas conversions, probe position calculations, and other vital engineering tasks without needing a laptop. It's designed for environmental engineers needing immediate access to data while working in the field.

**Highlights:** Gas conversion calculations, Isokinetic sample position calculations, Extraction rate calculations, Gas density calculations, Particulate matter normalization, Calibration function calculations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MyECS free?

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

### Is Stack Testers Friend free?

Stack Testers Friend is free to download, with no in-app purchases.

### Do MyECS or Stack Testers Friend have ads?

Neither MyECS nor Stack Testers Friend shows ads.

### Which is updated more often, MyECS or Stack Testers Friend?

MyECS ships an update every 8 months, and Stack Testers Friend every 7 months. Most recently, MyECS was updated on September 30, 2026 and Stack Testers Friend on September 24, 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.*