SUPPORT
How can we help?
VPD is designed to stay simple. If something is unclear or not working as expected, send us a note.
Email VPD supportHow is VPD calculated?
VPD uses air temperature and relative humidity to calculate Air VPD. Turn on leaf temperature to calculate Leaf VPD using the separate leaf reading.
Does VPD need an internet connection?
No. Every calculation runs on your iPhone. The app has no account, analytics, advertising, or cloud sync.
Why is my leaf VPD negative?
A negative result means the entered leaf conditions are below the calculated dew point. VPD preserves that value and flags possible condensation.
How do I reset a value?
Drag its slider or tap the numeric value and enter a new number. VPD validates the entry and updates the result immediately.
Contact
support@siteclockgps.com
Please include your iPhone model and iOS version when reporting a problem.
Current app version: 1.0