try.purescript.org is the one which is out of date: it is running a compiler in the v0.11.x series (can’t remember exactly which one), which is quite old now, since we are currently gearing up for v0.14.0. We are currently working on getting try.purescript.org updated, I am hoping to have it done over the next week or two.
Also, if you’re learning PureScript for the first time, please use the updated version of the PureScript by Example book here: https://book.purescript.org/
I am building a little webapp with a Purescript frontend, I’ll share it once is done (is really a toy project to intro myself to the lang…so be gentle )