Hey mama, I feel you on this one, my niece went through the same thing and her mom was losing her mind over it. Let me break this down for you properly.
WhatsApp does have some built in safety stuff that helps with the stranger danger issue. There is a setting called Silence Unknown Callers which blocks calls from numbers not in your contacts. You can find it under Privacy then Calls. Also under Privacy there is a Groups setting where you can choose who can add your kid to groups, set it to My Contacts and randoms cannot drag them into sketchy group chats anymore. Profile photo, last seen, about info, all of these can be locked down to contacts only too. Block and report features work pretty well and removed accounts get flagged on WhatsApp side.
Now for the bigger picture, these settings are good but they ain’t enough on their own. Kids find workarounds, they unblock people, they add strangers as contacts thinking they are friends. That is where monitoring apps come into play.
Xnspy is one option that lets parents see WhatsApp chats, multimedia shared, contact lists, and even keystrokes on the device. It runs in the background so your kid wont know its there. You install it on their phone, set up the dashboard on yours, and you get a feed of activity. It also does call logs and GPS tracking if you wanna know where they are.
Other apps in this space include Bark which scans messages for concerning content like predators, bullying, or self harm keywords and alerts you only when something flags. Qustodio is more of a screen time and app blocker with web filters built in. Mspy and FlexiSPY also exist with similar feature sets.
But heres the catch, all these apps have limits. WhatsApp uses end to end encryption so most monitoring apps need physical access to the device once to get set up, and some require rooting or jailbreaking which voids warranties. iOS is harder to monitor than Android because of Apples sandboxing. Disappearing messages, view once media, and self destructing chats can bypass logging too. Plus theres the trust thing, if your kid finds out theyre being monitored without knowing, it can blow up the relationship.
Quick question for you, are your kids on iPhone or Android? That changes what options actually work for your setup.