Apple has officially released MacOS 10.15 Catalina, which eliminates support for 32-bit applications.

Please read this knowledge base article before upgrading.

Will Smaart do 'this'?

Smaart can do a lot of things. It's used for measuring sound reinforcement systems, evaluating public address systems, analyzing room acoustics, industrial vibration analysis, and there are many uses that we don't even know about! Chances are good that Smaart will be a valuable tool in any kind of sound measurement process.
Don't take my word for it though, search through the Help Files or the Getting Started guide for a specific feature, or download the 30-day Demo and get a feel for the program first-hand (highly recommended).