Yea, there really is No Free Lunch
The All-In-One app "things" do a poor job of the three (gauges/programming/scanner) they try to replace.
You get gauges that rely on the PCM dataline and miss the most important info you need like Accurate Trans Temp & EGT. Adding those sensors to them costs so much you would have been better off spending for Real gauges in the first place. Plus the display isn't going to be easy to read once you divide-up the tiny screen
The Vast majority of them have mediocre, generic, programming with limited flexibility.
The Vast majority of them have mediocre, generic, scanner capabilities and don't come Close to what you'll need to do proper diagnostics.
They're just Bling
to satisfy the Smart Phone App people who think there's always "an app for that!
" without the knowledge to differentiate substance from the "shiny stuff"
Take the time, do it Right, spend what you can afford - as you can afford it.
Good Gauges - Good Programming - Good Diagnostics you'll be Way better off in the end....