Hi @mjlewis,
As soon as you contribute to My Ecobee device (DTH), all the smartapps available at my github can be used free of charges for your own use cases.
My ecobee device has been around for more than 3 years now and it’s very stable. There is no trial version given the amount of development & testing efforts that I’ve put into it. Just look at the number of contributors who are happy with the end product!!
P.S. The paid applications at my store (related to ecobee) are my zoned heating/cooling solutions which bring the ecobee integration with SmartThings (contact/temp/motion/presence) sensors & smart vents to a whole new level.
For more info about my zoned Heating/Cooling solutions, refer to
P.S. I’d be releasing soon some new DTHs in cooperation with another device manufacturer for even more zoned heating/cooling features…
www.ecomatiqhomes.com/store
Regards.