[0xdeadbeefbabe]

I tried it yesterday while looking for an app that would track "on a scale of 1-5 how well did I do X today". I settled on KeepTrack, but it doesn't have habitica's style. Maybe habitica encourages taking the habit seriously without taking myself too seriously.

[schrodinger]

I like https://www.askmeevery.com/. It just sends you an email and you reply. And if the reply is numerical, it'll generate a plot and statistics for you.