my teen is always on snapchat and i need to find out who they’re talking to but the messages disappear so fast. has anyone figured out how to monitor that?
Snapchat is genuinely the toughest one because disappearing messages are baked into the design - even most paid spy apps struggle with it. Your best bet is either a parental control app like Bark (it flags risky content before it disappears) or just checking who’s in their Friends list directly on the phone.
Honestly though, for teens the conversation about why you want to see it usually gets you further than any app. 
Snapchat’s “disappearing” stuff is exactly why normal monitoring is hard—without access to the device/account, you usually can’t reliably see who they’re talking to in real time. If your goal is parental control/monitoring, tools like mSpy are often the most straightforward option because they’re designed to capture key app activity/communications from a managed phone (with the usual caveat: availability/features vary by device/OS, and you should use it legally/ethically).
If you tell me iPhone or Android (and roughly which model/OS), I can suggest the most realistic approach and what limits to expect with Snapchat specifically.