Terrible
I've used multiple end-user tuning softwares and interfaces but never an interface where tunes are sent remotely and that require a phone connection. This might be the absolute worst device and software I've ever had to use. On top of essentially bricking my car at this point due to who knows what, the app just loops endlessly when the recovery and even stock file is selected. I'm asked what file to write, I select, it downloads, and then asks again what file to write. It doesn't end (Wifi, BT and physical obd2 connection were ALL maintained). And don't even get me started on how slow this is. I can read, edit, write AND go get a 10 minute log with my hptuners device/software on a customer car before this glorified paperweight can even download a single file from the cloud. 10/10 will never use this again.