It's very easy to use, it does not require any installation or dependencies which makes using in embedded applications much easier than other similar tools I've used previously (which required installing some kind of library). The API documentation could be better - there are many functions that do almost exactly what you'd expect them too but without good examples they're hard to understand at first glance. There isn't anything really bad about this product so far; however if your looking into parsing strings then maybe try another tool as well because otherwise acid has an edge here! We were trying to parse complex expressions such as "Solve(a*b + c) / Solve((d+e)*f)" from user input text boxes before inserting these values back onto our database tables with SQL statements.