meater wireless cooking thermometer

this is the product:
https://www.amazon.com/MEATER-Thermometer-Rotisserie-Bluetooth-Connectivity/dp/B07H8WTFHW/ref=sr_1_2?dchild=1&keywords=meater&qid=1590458716&sr=8-2

and this is the companion app:
https://apps.apple.com/us/app/meater-smart-meat-thermometer/id1157416022

if you have used this, how accessible is the app? the app looks clean and easy, but i don't have the device yet, so i couldn't finish the last step and test it out.

unlike many so-called wireless cooking thermometers, this one seems to be truly wireless, meaning it has no wire and doesn't require a separate transmitter.

i can just try it out, but it costs $99, so if it doesn't work, i'll have to return it and not just keep it. don't like the hassle.