Stack Testers Friend
Lewis Holmes Productivity iPhoneiPadiPod touch
Stack Testers Friend is a free Productivity app for iPhone and iPad by Lewis Holmes. Requires iOS 13.0. Updated June 19, 2026.
- Price
- Free
- on the App Store
- Size
- 33 MB
- Age 4+
- Updated
- Jun 19
- 2026 · v1.3.11
Screenshots
About Stack Testers Friend
The app has been developed by the Engineers of CES Environmental Instruments, one of the UKs leading environmental Test Houses and incorporates some of their on-site calculations in one easy to use app. When working on the stack and you need that quick answer to a gas conversion or probe position, the answer can be at your fingertips. Simple and easy to use the app contains lots of essential calculations for the stack tester without the need to manually calculate the value or start up a laptop. The app is an essential tool for the professional Environmental engineer having all the tools to quickly check the numbers whilst out and around site. The contents of the CES Environmental Instruments popular Engineers Note Book is preloaded within the app. The app can do the following and much more: - Calculate Dia, CSA, Circ. - Isokinetic sample positions, General & Tangential - Extraction rates - Gas density - Calculate H20 from wet & dry Oxygen - Gas ppm/mg/m³ conversions & Normalisation - LOD - Particulate Matter Normalisation & estimation of temp, H2O & O2 - Ranging & scaling of dust monitors & outputs - Calculation of values using calibration functions - Biomass fuels
What’s new
Version 1.3.11 · Updated June 19, 2026
- Updated DURAG guidance PDF.
App privacy
The developer, Lewis Holmes, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Stack Testers Friend | – | Free | June 19, 2026 | |
| PATMobile | – | Free | Sep 22, 2026 | Compare |
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| Kärcher Machine connect | 5.0 / 5 (9) | Free | Sep 30, 2026 | Compare |
| ComplyFlow Live Access | – | Free | Sep 30, 2026 | Compare |
| ADHD Planner AI Task: Splitti | 4.5 / 5 (19) | Free | Aug 17, 2026 | Compare |
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