Are hidden Android spy apps real and how can I find them?

I’m getting paranoid that someone might be secretly tracking my Android. Are those invisible spy apps actually a thing? How can I check my phone and be sure it’s clean?

I wouldn’t worry unless your partner is trying to secretly catch whoever keeps eating the kids’ fruit snacks at 2 AM! The only invisible spy tracking me is my toddler who magically appears the exact second my Xbox turns on—but hey, what do you call a secret agent who stays in bed? Undercover!