TTC

I’m not sure your app is reading them quite right because it definitely shouldn’t say 0 if there’s a line at all - and I can see a faint line on that last test. Also day 11 is much lighter than day 12 but it’s read them basically the same.
Just remember the app is only a total guess as to when your fertile window will be so you might just ovulate a little later in your cycle.
Ovulation tests should always be done between 10am-2pm so it looks like you’re testing at good times. Just keep testing, some women don’t ovulate until around day 22 or even later so there’s still time 🤞 the other options are either that you ovulate day 12 but missed your peak (as the tests were much higher around there) or also some women don’t ovulate every cycle so that could be a possibility x

The second test looks quite dark . I’m using the ovulation tests . The app is not all that to be honest. As long as you see two dark lines it’s ovulation. With my last pregnancy I had quite dark ovulation tests. Anything that is not same as the control line means no ovulation. The app just predicts ovulation with my last pregnancies I ovulate 10 days after my period and the app was way off my ovulation times and I got pregnant. Just keep testing. Also test on your morning pee and try not to drink too much water within the 4 hours.

When I get to around the time I’m due to ovulate I test twice a day, morning and evening as anytime between 10 and 8 is fine although I do mine morning and got my peak at 8am. You might have a short peak window and missed it on the sticks due to testing once a day x

My strip tests look similar to yours.. I’ve only been able to confirm ovulation on the digital smiley face test! Maybe try them?
Like you above mine never went about .50! And I know I’ve ovulated this cycle as I’ve tested positive with Proov pdg tests which confirm if you ovulate after the event!