It is if you opt for a hidden Snapchat tracker app like Eyezy. Apps that work in hidden mode hide the app on the target device. That means if you install Snapchat tracking technology on your child’s phone, they won’t know you have access to their messages. But remember, not all monitoring apps are created equal, so just because an app claims to let you see their Snapchat messages, it doesn’t automatically mean it’s undetectable.