Nexa

The app (and website) inexplicably lacks override controls. Outdoor temp data from the internet seems to have been removed; must have an outdoor temp sensor. The menus are finicky. Would be nice if there was a novice mode that explained in detail each parameter and how it affects operation, for new users. The app does allow you to fine tune some parameters of the control to dial in your heating, but primarily this app is useful for monitoring. You get a better experience in a web browser.