Hi MysteryMoog, HydroPower,
Thanks for your reply.
Definitely there are other options, but most (if not all) of them are Arduino-based devices. I like Growduino very much, it’s nice device. But it’s capabilities are limited by tech spec of the platform (micro-controller). GrowDirector runs on Android OS, dual core 1GHz CPU and other hardware from 21-st century 
MysteryMoog, there are only few prototypes, that are currently under testing by my friends - growers. The target price (if it comes to crowdfunding) is going to be around US$600, including temp, humidity and soil moisture sensors. If you look at similar devices (with touchscreen and WiFi), they all far above $1k, so I think, bringing better product for descent price is a fair proposal, what do you think?