OnCall Tech app · iPhone & Android

Your repair library, one tap away.

Install OnCall Tech on your home screen and open error codes, diagnostic guides, field manuals and the AI repair assistant like any other app. It installs straight from your browser: no app store, no extra download, and it updates itself.

  • Opens full-screen from your home screen
  • AI repair assistant built in
  • Guides you've opened work with weak signal
  • Included with lifetime access ($34.90 once)
Get lifetime access · $34.90

The app is free to install. The full library and the AI assistant unlock with lifetime access; sign in once in the app with the email you used at checkout.

OnCall Tech app icon

iPhone & iPad

  1. 1Open oncalltech.online in Safari.
  2. 2Tap Share at the bottom of the screen.
  3. 3Tap Add to Home Screen, then Add.

Android

  1. 1Open oncalltech.online in Chrome.
  2. 2Tap Install the app on this page, or the ⋮ menu → Install app.
  3. 3Confirm. The OnCall Tech icon appears with your other apps.

Windows & Mac

  1. 1Open the site in Chrome or Edge.
  2. 2Click the install icon in the address bar, or Install the app on this page.
  3. 3OnCall Tech opens in its own window, like a desktop app.