Is there an app to control my child's Xbox time limits? [closed]

Is there an app to grant or deny access to my child's account, or control the schedule?

Now, I do everything online, I just wish there was an app for that.

You don't need to install an application for managing the playtime of your child, you just need to add him to your Microsoft Family as a child and change the playtime from your account.

First, you need to add him onto your Microsoft Family. From "Add members to your family group":

The way you add someone to your family group on Xbox One depends on whether they’re new to Xbox Live or already have an Xbox Live account. For kids who are new to Xbox Live, add them to your family group on the console, then manage their family settings on family.microsoft.com. Otherwise, they may not appear in your list of family members on the console.

If your child doesn’t have an Xbox Live account:

1. Press the Xbox button to open the guide, then select Sign in and sign in with your account.
2. Press the Xbox button again and select System > Settings > Account > Family settings > Manage family members > Add to family > Add new.
3. When the person you want to add is prompted to sign in using their Microsoft account email address, press B on your controller, then move the left stick down to select Get a new account, and have them follow the steps to create a Microsoft account.
4. When you’re prompted, select Add to family.

If your child has an Xbox Live account on your console:

1. Press the Xbox button to open the guide, then select Sign in and sign in with your account.
2. Press the Xbox button again and select System > Settings > Account > Family settings > Manage family members > Add to family.
3. Select the profile for the person you want to add, then press the A button on your controller.

If your child has an Xbox Live account that’s not on your console:

1. Press the Xbox button to open the guide, then select Sign in and sign in with your account.
2. Press the Xbox button again and select System > Settings > Account > Family settings > Manage family members > Add to family > Add new.
3. Have the person you want to add sign in with their Microsoft account email address and password, and when you’re prompted, select Add to family.

After adding the child account to your family, you can change the playtime from the Microsoft Family page. From "Set up screen time limits for your child ":

To set screen time limits for your child on Xbox One and Windows 10 devices, go to your family group and sign in with your Microsoft account. Then:

1. Find your child's name and select Screen time.
2. If you want to use the same schedule for all devices, turn on Use one schedule for all devices.
3. If you’d rather manage the schedules separately, scroll down and switch On or Off individually for Xbox One and Windows 10. If you don’t want screen limits at all, turn the same option Off.
4. If you want to give them the full amount of time you’ve scheduled, leave the default setting of Max scheduled. For example, if you’ve allowed screen time from 8 am to 8 pm, they could use their devices that entire time.
5. If you don’t want the default Max scheduled, select the row for each day to set how much time and when you allow your child to spend with their devices.
6. Type in your schedule choices, select Add and then select Save.