I think the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> should work on the <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> more.  For example I don't have cycles due to the depo shot and I hate having to constantly delete each week it tells me that my cycle is coming up and other people having issues with wrong length when it ask you how long your cycle are. Don't get me wrong I love the app it just needs a little more done to it