Testing question

So I am using 2 different apps to track my ovulation and period.  According to the app I have had longer it says my period was due Friday(the 5th) but according to this which I just started about a month ago it says my period is due this Saturday(13th).  I was wondering if I should take a pregnancy test how or wait.  I am getting antsy since my husband and I have been trying for about a year now. And that wait is always the worst and then getting a negative:( If I go by my other app I am late. So, should I take a test or wait? Any opinions or advice would be appreciated since I am new to this. Thanks:)