If you're using a heat pad this winter then your best friend will be a hygrometer.
Keep an eye on the temperature and humidity in your propagation box, plant tank or indoor jungle all from your phone!
High accuracy within 0.1degrees.
Download the free app or you can use it by itself.
You can connect more than one unit to the app and give them nicknames to the locations of where they are!
A cute little emoji on the screen that changes with the temperature.