How often can you use the "computer analyse request" tool/button?

@SucheSchachfreund all tools run online do need some usage limitation in particular if those services happen to run on donations. So best thing is have you local computer to run the analysis. Fors starters you can run longer/move.

There are on fee analysis servers for those who need to analyze a lot:
nextchessmove.com/
decodechess.com/pricing-plans/

For free you can only get so much...