I've used Zero for over a year and I loved it as a quick fasting tracker. It was simple and worked well. Now 3.0 has landed and I cannot use the app anymore without signing up for an account. I don't want an account, I don't want to be email spammed (it's in the privacy policy), I don't want to be part of a fasting community. Zero was great because it was simple. Now it's not. The developers state they added the account because people would lose their data. It's an iOS app, use CloudKit. I'd much rather pay a few bucks for Zero than have this new monetized version that is using my data for marketing.
I use it daily to track my fasts. At first, I didn't have the reflex to use it but after a few days, it became automatic. Now I'm excited to see my progress and it motivates me to keep going.
Been using 2.0 for over a year and have absolutely loved it even before this update. While the previous build was simple and useful it was lacking in features but was also free so it was understandable. This update fills in any gaps I had before while still maintaining the insane FREE price tag. Thank you, Kevin Rose, for not capitalizing off the wellness of human beings with your suite of apps like Zero and Oak.