Apple have an in-built feature on all their devices called Screen Time. No apps required! It’s easily set up in a matter of minutes, and will give you significant control over the following areas:

• Check the usage: down to each day and time
• Downtime: specify what times of the day the device can be used
• App Limits: set time limits for apps
• Communication limits: set limits based on contacts
• Always allowed: choose apps that are always allowed
• Content & Privacy restrictions: block inappropriate content

How to set it up:

• You need to access their phone in order to set it up.
• You set a Screen Time Pin code, this is like a master key, don’t tell your child this pin
• Screen time limits – set limits of how much time they can use their device for, down to each app
• Set a bed time, where the device “locks” and only apps you approve will work
• You can disable Google search, Youtube, turn off the browser
• You can restrict/allow them from downloading/deleting apps
• You can see what their usage is, in total and down to specific apps
• You can stop them from changing their Pin and locking you out of their device