If would you like to prevent your child from having access to the Whisper app, you can do so by placing restrictions on their device.
To do so on an iPhone go to Settings > General> Restrictions > Enable Restrictions. You will be prompted to create a passcode, simply enter the same code twice. From there you can put restrictions specifically on Apps with age ratings.
To block Android smartphones, you can find device restriction apps from a variety of third-party companies. You can find these apps at the Google Play Store. We recommend using "SecureTeen" or "AppLock."
To block Android tablets, you can create a restricted account for your child to use. To do so, lease go to Settings > Users > Add user or profiles. You will then be prompted to create a pin code, password, or pattern if you haven't already done so. After you create a security lock, a new profile will be created, all the installed apps on the device will then be displayed, and each app's access can be toggled on or off at your discretion.
From the lock screen, you will find your account, which is protected with a security lock, and the new restricted account. Your child can instantly access their account with your restrictions set in place. Although the Google Play Store icon appears, trying to access this will bring up a notification that you do not have permission to use the Google Play Store.