As I've said here several times before: the only way to use the Anova (old app or new) is to not use the app. Plug the thing in, dial the temperature, press start when you want it to start, and press stop when you want it to stop. Problem solved.
All the people here who are complaining about the app are complaining (rightly) that the app is crap. But what they are missing is that no app should be necessary. Why on earth would I want to use my phone to cook?
Can I control my oven with an app? No. Can I control my cook top with an app? No. Can I control my toaster with an app? No. My microwave, fridge, freezer, coffee maker? No. So, where is the problem?
God help all the poor souls whose phone battery runs out at the wrong moment. Everyone will have to starve then, right?
The whole connectivity thing has been a solution in search of a problem all along.