Open Settings
Tap Screen Time
Tap Turn On Screen Time if it is not already enabled
Tap App Limits
Tap Add Limit
Select the app category or specific app
Tap Next
Set the time limit to 1 minute or the lowest available option
Turn on Block at End of Limit
Tap Add
Open Settings
Tap Screen Time
Tap Content & Privacy Restrictions
Turn on Content & Privacy Restrictions
Tap Allowed Apps or App Store Purchases
Disable the apps you want to block
Tap iTunes & App Store Purchases
Set Installing Apps to Don’t Allow
Set Deleting Apps to Don’t Allow
Open Settings
Tap Screen Time
Tap Use Screen Time Passcode
Set a passcode to prevent changes
Open Settings
Tap General
Tap iPhone Storage
Select an app
Tap Offload App or Delete App
Use Guided Access for temporary app blocking
Open Settings
Tap Accessibility
Tap Guided Access
Turn on Guided Access
Set a passcode
Open the app you want to restrict
Triple-click the Side button
Tap Start
Use Family Sharing and parental controls to block apps on a child’s iPhone
Open Settings
Tap Screen Time
Tap your child’s name
Tap Content & Privacy Restrictions
Set app restrictions as needed