I Work At Site Calculator

I Work At Site Calculator is a lightweight utility app designed for field and site work. It provides simple, reliable calculators for common on-site tasks, including: • Drawdown timing with saved results • Target mix calculations (start from zero concentration) • Unit conversions for drawdown rates • Pipe and volume calculations The app is built to work fully offline with no accounts, no ads, and no data collection. All values are stored locally on your device only. Designed for quick use in the field on both iPhone and iPad.