Build me an parental control app

I want a parental control app with those specifications

- Block harmful sites and content to ensure safe search
- Block bad YouTube search requests
- Manage app use
- Set screen time limits
- Check your kids’ YouTube search history

Our budget is 8000$ for the Android and ios app

And 2000$ for the windows and mac app

Note* the windows and mac app is quite simple it only contains one feature block adult websites

10K for the whole project