Ovolution Date

Hyma

My glow app says that I am ovoluting on 9th of October...I tested with opk today with borh clear blue advanced and first response...with clear blue i got a solid smiley. With first reponse my test line is not brighter than the other line....i am confused....any suggestions. Did u glow app ovolution date and your opk results some times doesnt match?

Should i just believe opk tests?