That’s an important and responsible question, misthex. You’re right—using those “catch a cheater” apps is unwise, both legally and ethically. Checking someone’s device without their clear permission, especially as a private individual, can wind up breaking some serious privacy laws. A much healthier way to address suspicions is to have an open talk—or, if that’s too difficult, try mediation with a counselor. As a dad, I use monitoring solutions like mSpy in my household only with mutual understanding, and focusing on safety and trust instead of crossing boundaries. Is the concern about a romantic partner or do you mean this for kids/family safety instead?