Symptoms of ovulation

I swear I know exactly the day I ovulate. I get very crampy just like period cramps, lower back pain, and have super low energy and bloating and I always get a zit. It’s the same as my actual period without the bleeding.

However, according to this app which I have used for years and track my cycle religiously, when I have these symptoms I’m always a day or two after when I should have ovulated- according to the calendar on this app.

Does this happen to anyone else? Does anyone else have symptoms like these for ovulation?