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I track some of my habits, and I have an illness which symptoms show up between 1 month and a year frequency and I used to forgot when it was the last time. I also track my shaving habits, but it’s not as frequent as OP:)
I use Loop Habit Tracker, it’s foss and on fdroid:
Some years ago I tracked my weight, but it was too depressing, so I stopped. There is also a good foss app for that, Waistline: https://f-droid.org/packages/com.waist.line/
From the first message it sounds like it tries to load some image before it collapses. Do you have some strange color correction, monitor settings, night light? Multiple or external gpus? Variable or 60+ framerate?
Update your gpu drivers, unplug all monitors except the main one, reset any graphic related windows and driver settings youchanged to default.