Feature monkey has the cleanest way of showing accumulative data of all the posts and feature requests. Love the minimalist approach and design.

Feature monkey is a rich tool supporting custom widget sso login roadmap vote on behalf custom css import/export from css custom topics multi language support multiple admins private comments employee/ private feedback board email notification

I guess it's really safe cause it's open source, you can make notes on your habits but don't really do that. Its simple. Really fast. Haven't found a way to connect it to notion. In general it's a great app to track you habits. Does its job. Not more, not less.