Great app!
Great to record headaches. In the throes of a cluster headache there is not much I can do so to be able to just press a button to start it is great. Keeps running until u stop it. U can export the log in pdf format or spreadsheet to print to take to your doctor. Has a head diagram where u can note where headache occurred and has many options to record symptoms/meds etc. 10/10 recommend.