very handy
saves me loads of time on site when doing calculations
Free
About
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.
✓Gas conversion calculations
✓Isokinetic sample position calculations
✓Extraction rate calculations
✓Gas density calculations
✓Particulate matter normalization
✓Calibration function calculations
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What's New in Stack Testers Friend
1.3.11
June 19, 2026
- Updated DURAG guidance PDF.
User reviews
Developer apps
FAQ
What calculations can Stack Testers Friend perform?
Stack Testers Friend can perform calculations for diameter, CSA, and circumference, isokinetic sample positions, extraction rates, gas density, H2O from wet & dry Oxygen, gas ppm/mg/m³ conversions, LOD, particulate matter normalization, ranging and scaling of dust monitors, and calculations using calibration functions. It also includes biomass fuel calculations.
Is Stack Testers Friend available on Android devices?
Based on the provided data, Stack Testers Friend is supported on iPhone and iPad. Information regarding Android compatibility is not available.
How often is Stack Testers Friend updated?
The latest version of Stack Testers Friend is 1.3.10, last updated on June 20, 2025. This indicates a recent update, suggesting the app is actively maintained.
What is the age rating for Stack Testers Friend?
Stack Testers Friend has an age rating of 4+, making it suitable for a wide range of users. This rating suggests no mature content is present.
Does Stack Testers Friend have ads?
No, Stack Testers Friend does not contain advertisements. The app is free to download and use without any ad interruptions.
Can I use Stack Testers Friend offline?
The description implies that the app provides quick answers at your fingertips while working on-site, suggesting it is designed for use without constant internet connectivity. However, specific offline functionality is not explicitly detailed.
What makes Stack Testers Friend useful for environmental engineers?
It incorporates on-site calculations from a leading UK environmental test house, putting essential tools like gas conversions and probe position calculations directly on a mobile device. This eliminates the need for manual calculations or starting up a laptop in the field.
Does Stack Testers Friend offer any in-app purchases?
No, Stack Testers Friend does not feature any in-app purchases. The app is entirely free to download and use, with all its functionalities available without additional cost.
