Thunq is a play on "thunk", which is slang for "thought", as in the popular expression "who would have thunk it?" An obvious play on the brand here would be "Who would have thunq it?"
This modern and distinctive name could suit a wide range of apps and companies.
The word "thunq" contains only five letters and only one syllable. Single-syllable names are extremely rare and exceptionally prestigious. Established brands using one syllable names include Ford, Dell and Path.
Thunq.com is a dot-com domain. Dot com is the most prestigious domain extension. Once you own a dot-com, it will be much easier to rank for your own name in Google.