Psychro Calc Pro - Desktop
HVAC Psychrometric Calculator
Only for Mac
Free · In‑App Purchases
Mac
Psychrometric calculator with a live, zoomable chart, now in full IP units too. Try everything free for 7 days, then unlock with a one-time purchase.
Psychro Calc Pro is a psychrometric calculator for HVAC engineers and technicians. Calculate dry bulb, wet bulb, dew point, relative humidity, humidity ratio, enthalpy and air density from any two independent properties, at altitudes from −500 m to 11 000 m.
CALCULATION ENGINE
Saturation pressure over water and ice from the Hyland–Wexler equations (ASHRAE Handbook—Fundamentals, Ch. 1), Greenspan (1976) enhancement factor, and the ASHRAE wet bulb equation. Valid from −100 °C to +200 °C.
LIVE PSYCHROMETRIC CHART
Relative humidity, enthalpy, wet bulb and specific volume lines, with automatic Standard, Low Temp and Industrial Drying modes. Zoom and pan.
REPORTS & HISTORY
SI and IP (Imperial) units throughout — results, chart, PDF reports and history — plus your company logo on PDF reports.
FREE TRIAL, ONE-TIME PURCHASE
Free to download. Try every feature free for 7 days — no payment, no sign-up.
After the trial, unlock everything with a one-time purchase.
No subscription, no recurring fees.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://iklimet-lab.com/privacy-policy/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- IP units throughout: chart axes, lines, point box and PDF report now use °F, gr/lb, Btu/lb and ft³/lb
- History shows values in the selected units
- Keyboard input and a larger default window
- Your company logo is kept between sessions
- Switching between SI and IP keeps your calculation and converts it
- Fixes and improvements
The developer, Mehmet Karakas, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mehmet Karakas
- Size
- 15.2 MB
- Category
- Productivity
- Compatibility
Requires macOS 10.15 or later.
- Mac
Requires macOS 10.15 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lifetime Premium $17.99
- Copyright
- © 2026 İklimet Lab