Does <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> have a <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> widget? I've been using My Calendar for over a year, and I love the widget that tells you how many days until your period. Even if it's not 100% accurate, it's nice to have that estimate right on my screen. I just downloaded <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> because it looked like a better app overall, but not if there's no widget!