IHA Tool is available in RA2 & HomeWorks.  You can also adjust IHA on Sivoia (non-system) shades using the QSE-CI-NWK interface.  I've never worked with the Caseta or RA Select systems.

My experience with IHA in Lutron shades has been very good.  Out of the hundreds of shades I've installed I've only had to mess around with it on two shades right at installation.  Once installed, I've never had to adjust it.

My projects are almost 100% wired Sivoia QS shades.  If you're working with battery operated Triathalon/Serena shades they might now do IHA as well?