As somebody who has a bad habit of downloading lots of apps I want to try, and then never tries most of them, the biggest thing that prevents me from trying an

As somebody who has a bad habit of downloading lots of apps I want to try, and then never tries most of them, the biggest thing that prevents me from trying an app is when I have to sign up for an account before I can see how it works. These apps are very much a subjective choice based on how the app works and the GUI. I don't like giving out my email to an app that I may not keep for long if it doesn't fit my needs. If the app is already regarded highly I'm more likely to give it a try anyway, but with new competitors in a sea of other habit tracking apps claiming to be backed by science and to be taking "a different approach" I'm more skeptical. This is not to criticize your app of course, or to single you out. I haven't tried it because I'm not sure how it works and I'd rather not give out my email until I think that I might actually like to give it a shot and stick with it. Maybe I care a bit more about my privacy than the average person, but it feels a bit like walking into a brick-and-mortar store and the sales person asking for my name and phone number first thing. For iOS even adding sign in with Apple (which I believe is now required by the App Store guidelines if you offer other options like Google or Facebook) would make this better for me personally so that I can use private email forwarding.