I like Joule and the app. Now and then an update causes issues loading things. The best feature is the interactive app to show doneness levels of meats. Chefsteps has put a lot of time into this and it looks great. Joule itself is awesome. Heats fast, maintains temp great, the small size is awesome to carry around. I wish Joule could be used with out the wifi. Even with bluetooth I unable to connect.