Controller 67 also allows setting some simple programs (i.e., turn on/off based on time) via a relatively insecure Bluetooth connection to a smartphone app (no strict pairing) and allows some finer control over temp/humidity set points as well as export of temp/humidity data over time in a csv file.
I also confirmed with support that there is no way to set up complex programs (i.e., set fan to ‘on’ at speed 4 during lights out while setting fan to range from 0 to 5 during lights on based on temp/humidity).
In the release notes for the latest app update, there was a note “now compatible with Controller 67 & Controller 69”…though I don’t see a Controller 69 on their site. So maybe there’s another new controller coming?
I also found this morning that they are in development of a Cloudline LITE series. They have a description of them as being budget friendly package systems, but no release date or pricing.
Regarding their filters, I used one of the 4" filters on a 2x4 tent for about 1.5 years before they modified the design to allow swapping the ends to reverse air flow through them. It was great for the first run and ok for the 2nd run, but by the end of the 3rd run the air in the basement was starting to be a bit noticeably funky during mid-late flower, though it’s still ok to remove the odor from particularly smelly plants in veg. I’m currently in early flower with an 8" filter in a 5x5 tent so I’ll see how the newer generation of filters works soon enough.