For allies

A brother asked you to stand with him.

Being an ally takes one thing: reach out when he needs it. On Guard tells you when.

Accept your invite
What you'll get
A known adult site is opened
On Guard: Explicit content detected in Safari on Joe's iPhone at 11:42 PM ET. Marcus, now's a good time to check in with Joe.

This one goes out when a known adult site is opened on one of his devices. Nothing else the guard sees reaches you.

A device goes quiet
On Guard: Joe's MacBook Pro hasn't been active since Mon, Sep 7. Its defense may be down or the device is no longer being used.
On Guard is removed
On Guard: On Guard was uninstalled from Joe's ThinkPad X1 at 7:02 PM ET.

The app, the device and the time

No additional details. Never the site, the image or his history.

A group text with both of you

You both read the same message, so the talk starts from the same place.

Up to 8 messages a day

Reply STOP to opt out any time. Message and data rates may apply.

Accept your invite

Three checks, nothing hidden.

  1. Open the link he sent you. It lands on the accept page.
  2. Sign in or create an account, then verify your email and your phone (we text you a code).
  3. Tap Accept Invite. That tap is your consent to the texts described here.

No link? Ask him to send his ally link from On Guard. Reply STOP to any text to opt out, or HELP for help. He can remove you any time from his settings.

When you'll hear from On Guard
  • If a known adult site is opened: a check-in with the app, the device and the time. No additional details.
  • If On Guard is uninstalled, signed out or retired on a device: a text with the device and the time.
  • If a device has not been active for 7 days: a text with the device and the date. If defense is switched off on a device: an alert in the On Guard app.

Allies are alerted with the app, the device and the time. No additional details.

Alert texts arrive in a group text with the member and one ally, so both read the same message. Allies never share a thread with each other. The welcome and removal texts go to the ally alone.

What to say when it lands: a text, a call, an invitation to grab food. You're not a referee. “Saw the ping. You good?” is usually enough.

The longer version

Guides for both sides of the text

Questions? Contact support.

On Guard for you, too

The same defense he has. Detection runs on your device, and no screenshot leaves it unless you send one. Free for 30 days, then $9.99 a month or $99.99 a year.

Get On Guard