Quicktext is one of the most used addons for our business. I would be happy to pay for the Pro, but it is missing some must-have features: 1. Drag-n-Drop sort for templates. 2. Simple HTML editor. 3. Spell check. If it had those, I'd gladly pay for it.
This review is for a previous version of the add-on (1.1).
There is no pro version anymore, we merged all pro features into the standard version. The quicktext AddOn is open source, if you want those features, hire a professional coder in your area and let him add them for you. Sources: https://github.com/thundernest/quicktext