I can't praise this app enough. Main pros:
- all your data is stored locally not in the cloud, but you can easily back it up on Google Drive
- it lets you export your data anytime
- It comes with nice dashboards, weekly, monthly and yearly reviews. It let's you see the impact of each activity on your mood. It really gave me some interesting insights on my mood patterns.
My only complaint really is that the only numeric value you can track is your mood, everything else is yes or no.
A year or so ago, I've also started using Clockify [1] to track the time I spent on each activity. Again, I don't track everything, only a few habits I want to improve on. It has a mobile and desktop app. The UI could be improved but all the features I need are free, and most importantly data export.
It's the perfect time of year to set up a tracking system. My recommendation is start small. Track only a couple of activities first and add more as you build the habit.
[0]: https://daylio.net/
[1]: https://clockify.me/