Gertrude iOS Supervised Mode
Apple only allows internet content filtering on iOS devices owned by children under 18, or devices in Supervised Mode. This tutorial explains how to set up Supervised Mode in order to use the Gertrude iOS app on an iPhone or iPad.
- Platforms
- iOSiPadOS

The Gertrude Blocker iOS app plugs several important holes in Apple's Screen Time parental controls, including adding the ability to block searching for and viewing animated GIFs in the #images feature of the texting app Messages.
However, Apple currently only allows the app to work on devices that are signed in to Apple Accounts for children under 18. Sadly, this makes harder to use for anyone over 18 who desires to restrict access to certain content for themselves, or in a relationship of accountability.
We really wish Apple would change this policy, but until then, there are two ways to work around this limitation:
- If it it's possible to use a different Apple Account for the device, registered to an under 18 account (perhaps a sibling), this is the easiest way. It's also good to know that Apple does permit you to change the birthdate on an Apple Account.
- The other way is to put the device into Supervised Mode. This is a special mode designed for schools and businesses, which allows additional options, controls and restrictions. It is very powerful, but more difficult to set up.
Before you start
If you'd like to use Gertrude for iOS and you're over 18, it's definitely possible and worth the effort. Here's a couple key things you need to know before you get started:
- You will need a Mac computer to set up Supervised Mode. If you don't have one, you'll need help from a trusted friend who does, and who can help you from time to time going forward even after the initial setup.
- You will be temporarily erasing the device completely in order to set up Supervised Mode. If you have a recent backup, you should be able to restore all important content and data.
How to set up Supervised Mode
To setup supervised mode and install the Gertrude Blocker iOS app, follow the steps from this video:
Sample profile
As mentioned in the video, if you'd like a sample profile to help get you started, you can download our recommended starting point by clicking here.
Need help?
If you have any questions at all, we'd love to help. Drop us a line right here and we'll get right back to you!