The Apple Reminders app is a core, pre-installed task management tool deeply integrated into iOS and iCloud. While excellent for personal productivity, in strict corporate environments, organizations often require employees to use highly secured, internally audited task management platforms (like Microsoft To Do via Intune or specialized MDM containers). If users continue to use the native Apple Reminders app to jot down sensitive project deadlines, client information, or internal meeting notes, that data is synced to Apple’s iCloud servers outside of the organization’s control, constituting a major data leak. Because it is a native app, simply asking users not to use it is insufficient.
This guide explains how to completely disable the Apple Reminders app system-wide on an iPhone using Screen Time restrictions, preventing the app from being launched or accessed.
Disable the Reminders App via Screen Time
To enforce a strict block that survives device reboots and prevents the user from utilizing the app, we must leverage Apple’s native Content & Privacy Restrictions.
- Unlock your iPhone and open the main Settings app.
- Scroll down and tap on Screen Time.
- If you haven’t already, tap “Turn On Screen Time”. It is critical to tap Use Screen Time Passcode to set a secure PIN that prevents the end-user from bypassing your lockdown.
- Tap on Content & Privacy Restrictions.
- Toggle the main switch at the top for Content & Privacy Restrictions to the On (green) position.
- Tap on Allowed Apps.
- Locate Reminders in the list of native applications.
- Toggle the switch next to Reminders to the Off (grey) position.
Verify the App Lockdown
Toggling this switch immediately instructs the iOS kernel to sandbox the application binary and hide it from the user interface.
To verify the change is successful, return to your iPhone’s Home Screen. The Reminders app icon will have vanished. Swipe down to invoke Spotlight Search and type “Reminders.” The app will not appear as a launchable option. Furthermore, attempting to use Siri to “Set a reminder” will result in Siri stating that the app is restricted. You have successfully prevented corporate data from being stored in unauthorized native task managers.