No adjustment You better know your exact cycle length ahead of time, because this app doesn't learn from the info it's given. Also, don't ever hit the "i got my period" button by mistake, because there's no going back! Oh well, who cares, because you can't look back at what's happened in the past months anyway, just at exactly what day you might (or might not) have started. Too bad, because the app is so dang cute! Surprisingly