My migraines are vestibular and strongly paired with motion sickness. I often find using the app uncomfortable when I’m having a migraine because the app “slides” between screens. I finish up noting my symptoms, hit the checkmark, and the next screen SLIDES in from the right. This increases my motion sickness and my migraine symptoms. Maybe you could change the screen transition from a sliding motion to a sort of fade in/out? That might help prevent worsening vestibular symptoms.