This contemporary and professional name is well suited to a hardware or security brand.
The word "stacksync" contains nine characters and just two syllables. Two syllable names make popular global brands. Leading companies using two syllable names include Honda, Starbucks and Pepsi.
Stacksync.com is a dot com domain. Dot com domains are the most desirable domain extension in the world, famously used by websites like twitter.com. Once you own a dot com, it will be much easier to rank for your own name in Google.