I just tried it, I like it, it feels smooth.
Not as nice as TOS but it feels less intricate than TWS.
I just converted a long iron condor into a put butterfly and it immediately worked it out and showed it as a whole strategy.
TWS did not do that, or at least, I couldn't do it... and I had to monitor the single legs or group them into a dedicated tab.
It looks compact, everything in one window and one just clicks around tabs. I can't find a "detach chart" options, and I like that, might suggest it.
Charts are tradingview.
Option chains look like the android app, plus this "Lattice" new version which is like a calendar with a visual of what I think might be IV... need to explore this new feature more.
Payoff modelling chart is basic like on the App, slightly better than TWS but not like TOS.
I think it's missing all the separate detachable tabs that one might find useful to run on multi display setup. But somewhere I read that they might introduce mosaic style tabs.
Definitely better than their browser client portal trader for quick access and trade management.