Well, after checking, it appears the Deepblu app has been removed from the Apple app store. So, if you don't already have it on your iphone your screwed. It appears the app is still available on the Google play store. I may download it on a Google device just in case the iphone version quits and the Google app will still work. Anyway, there appears hope that those owning a working version of this device can continue using all functions for the time being by using the Deepblu app for settings and Subsurface app for logs. How long this will work? Who knows? I wouldn't bet it will be working indefinitely but you might get a year or two out of it.