Proof of Life
Available everywhere

Install in 10 seconds. No app store.

Proof of Life is a Progressive Web App — it lives on your home screen, works offline, and gets updates automatically. Pick your device below.

iPhone & iPad

  1. Open checkon.app in Safari (must be Safari, not Chrome).
  2. Tap the Share icon at the bottom of the screen.
  3. Scroll down and tap "Add to Home Screen".
  4. Tap Add. The Proof of Life icon appears on your home screen.

Android

  1. Open checkon.app in Chrome.
  2. Tap the ⋮ menu in the top-right corner.
  3. Tap "Install app" or "Add to Home Screen".
  4. Confirm. You're done.

Desktop (Mac, Windows, Linux)

  1. Open checkon.app in Chrome, Edge, or Brave.
  2. Click the install icon in the address bar (looks like a small monitor with a down arrow).
  3. Click Install. Proof of Life opens in its own window.

Why no app store?

Skipping the store means instant updates, no 30% platform fee (so we can keep the free plan generous), and the exact same experience whether you're on iPhone, Android, or desktop. It's the modern way to ship a safety app.

Notifications

After installing, allow notifications when prompted — that's how you'll get check-in reminders, nudges from family, and SOS alerts from people in your circles.

Already installed?

Sign in and do your first check-in.