Anyone have any experience tracking with this app?

Hi all! I’m just starting my TTC journey and I have no idea what I’m even looking at here. We’ve been trying for a while without really paying attention, using protection, taking any supplements, etc but it’s taking too long now so we decided to really REALLY start trying lol Has anyone used this app before and is it accurate? The QR code came with the the kit I bought on Amazon to download it and track all my strips. I’ve been logging my strips every morning 1/2 days after ending my period and the app is tracking my levels as low and changing my ovulation date. Am I doing something wrong? All the strips look the same to me so not sure what I’m supposed to be looking for and how a “positive” one should look like also 😩 i took one 30 minutes ago and returned at 0.28. A slight increase but it’s moved my ovulation date out another week even though it at first said I’d stsrt today. Any tips or advice welcome 💖