Flashlight vs FieldCalc

Doesn't get much better than this app! Easy-to-use and convenient flashlight that turns on immediately upon launching the app. With an all black background and large clock, this app makes the perfect addition to your nightstand. The best, fastest, and brightest flashlight available! Turn you iPhone into a handy light in the darkness! Features: + Remote control your phone's LED from your watch + Simple and tasteful controls + Uses the LED for powerful illumination + Launches with light on for the fastest light turn on possible + Conveniently displays local time + Large Clock, perfect for night time use Disclaimer: Continued use of the flashlight may dramatically decrease battery life.

FieldCalc is the only calculator an HVAC/R technician needs on a service call. Every daily calculation in one fast, modern, fully offline app — no subscription, no clutter. CALCULATIONS - PT Chart — saturation pressure and temperature for R-410A, R-32, R-22, R-134a, and R-407C, with instant analog gauge readout - Superheat — suction line superheat with flooding warnings - Subcooling — liquid line subcooling with flash gas warnings - Duct Sizer — equal-friction round and rectangular duct sizing (ACCA Manual D / ASHRAE), with velocity limit warnings - Delta-T / Sensible Load — sensible BTU/hr and required airflow, with tonnage and metric conversions WHY FIELDCALC - Works 100% offline — no signal needed on the roof or in the basement - Imperial and metric units on every screen - Modern, high-contrast interface built for the field - Fast — open, calculate, done - No account, no subscription Built on trusted engineering sources: CoolProp thermodynamic data, ACCA Manual D, and ASHRAE Fundamentals. FieldCalc is a reference tool for qualified HVAC/R professionals. Always verify results against equipment manufacturer specifications and applicable codes.