Hi all. After years of self experimenting with many ways to track subjective variables, I'm happy to share the app I've been working on for the last few months. It's called Subjective and will be available on iOS first, and later on Android. You can find out more about it here:
Let me know if you have any questions. It's the first time I share it with anyone outside my immediate circle (some are beta users), but people seem to like it.