If you want to prevent any accidental purchases, you need to enable authentication for purchases. Tap the name of your device operating system to see the instructions.
Android
- Open Play Store.
- Tap your avatar to open the Menu.
- Select Settings.
- Go to the Authentication section.
- Tap Require authentication for purchases.
- Select the option that is the most convenient for you.
iOS
- Open Settings on your device.
- Tap Screen Time.
- Select Content & Privacy Restrictions. You may be asked to enter your passcode.
- Tap iTunes & App Store Purchases.
- In the section Require password, select Always Require.