What's the best site for logging migraine info into my smart phone?

I like iHeadace. It's pretty simple & straightforward. There is a spot for "notes" where I can log anything I think is necessary that the app doesn't cover

I've been using MyPainDiary for years. However I also have other conditions to track and this app is really good for that.

I use migraine coach mostly but I like the visual and simplicity of MD also

Thanks all. I really really appreciate your help.