I have been using this app to monitor my mood for years now. It has helped me track my monthly and yearly/seasonal mood fluctuations. It also serves as a diary. I love that you can add photos to each entry and add hashtag words to monitor mood states as well. The 2 daily chimes (one at 10 am and one at 3 pm) encourage me to check in with myself and are also a beautiful reminder to take a breath and be present in the moment. Overall I love this app.
Tihoyouknow about iMoodJournal - Mood Diary, v2.2.3