A: Yes. "Psychrometric+" (iOS/Android) is excellent and includes all ASHRAE formulas. It costs ~$5. "HVAC Buddy" also has a free version.
Modern psychrometric apps (like VisSim or Trace 700) do much more, but they also require .NET frameworks, cloud logins, and constant updates. Version 7 was lean. It ran on Windows XP, Windows 7, and even under Wine on Linux. It did one thing—psychrometrics—and did it perfectly. Ashrae Psychrometric Analysis Cd Version 7 Free Download
Generates "state point" and process reports that can be exported for inclusion in professional proposals or spreadsheets. A: Yes
ASHRAE members often receive discounts or complimentary access to specific digital tools and standards. Top Free & Legal Alternatives but they also require .NET frameworks