Personally, I like my original
Personally, I like my original version 1 unit much better. The new app never seems to work, constantly looses connection, and drops data entered (migraine records, medication doses, etc). This unit is also not nearly as user friendly. I’m very disappointed that I had to spend so much money for an upgraded unit only because the company no longer makes the electrodes for it. And the upgraded unit is worse than the old unit. Disappointing! I rated it three stars though, because when the unit works, it’s great! It’s very effective, but unreliable.