I don't know if this is the right place to post this but considering it's about periods I figured why not so for about 4 or 5 years I have used a period Tracking app called clue I liked it it worked sometimes I have irregular periods which is really really frustrating more so when you're trying to get pregnant but I have always been looking for a new tracking app because clue would predict my periods but they were always a week off I would have either gotten it a week early well I got it a week late I've never had any real results on being close so I've been using glow for about two months now I believe n I've been putting information into the app and seeing what it gives me well I noticed that it said I had five days until my period And that's when I started to prepare make sure I had all my stuff wasn't missing anything I like to be prepared as the days got closer we come to today it says I have one day until my period Well I just got it today a day early I am not complaining at all I'm a bit sad that I wasn't pregnant this time but there is next time but that is the closest prediction I have ever had. glow gets 5 stars