Positive or negative ovulation test

I’m having my first IUI this month. And I’m tracking my ovulation with the easy at home testing strips. The clinic wants us to come in the morning after we have a surge/positive opk. Tell me what you think of this test... is it close enough to just go in tomorrow or should I wait another day for it to be a stronger reading. Side note, I’ve also downloaded the Premom app that keeps track of all m tests... with this one it said it was a low result. I don’t know what to do