it can be a little buggy... just make sure you fully close the app and start the login process over each and every time you want to use it. Otherwise, it's basically a much better option than using the in-game Auction House, especially if yer on current (PS4) gen, where the menus can be terribly slow and painful to navigate through. It's slightly better on PS5, but i'd still say using the app, at least in combination, to supplement the in-game AH is a must have. There's a few restrictions, you can't sell players until they've had all upgrades removed, which requires the game client. It's great, but i still voted "Kinda" as it can be hit and miss at times.
I'm a first time MUT player and wish i had discovered the companion app sooner, it's useful, for sure.
