When to test for pregnancy?

I use multiple different apps to track my increasing very irregular cycles. According to glow I'm 6 days late, according to flo I'm 2 days late, according to premom I am 1 day late, and according to fitbit my period is due tomorrow. I put in all my cycles to all of then but they all differ in dates. The cycle information all differs as well for the timezone of everything. Since my ectopic my cycles went from 35 or so days up to 76 days at the longest. When should I test for pregnancy? Ovulation was never confirmed but I forgot a few days as well. Please help!