The best alternatives to Changes are Tangerine, Mr Mood, and Thyself. If these 3 options don't work for you, we've listed a few more alternatives below.
Moodflow is a minimalistic mood tracking and year-in-pixels app that is free to use. Moodflow tries to help people to reflect more on their lives, making them realize about the good and the bad. Mood Pixel is now Moodflow