The PE Calculator can be added to your home screen so it opens like a native app — full screen, with its own icon, and available offline after the first visit.
iPhone & iPad (Safari)
- Open this site in Safari. (Other browsers on iOS can't add to the home screen.)
- Tap the Share button at the bottom of the screen (the square with an upward arrow).
- Scroll down and tap Add to Home Screen.
- Confirm the name and tap Add. The PE Calculator icon will appear on your home screen.
Android (Chrome)
- Open this site in Chrome.
- Tap the three-dot menu in the top-right corner.
- Tap Install app (or Add to Home screen, depending on your version of Chrome).
- Confirm by tapping Install. The icon will appear on your home screen and in your app drawer.
Desktop (Chrome, Edge, Brave)
- Look for an install icon in the address bar (a small monitor with a downward arrow).
- Click it, then click Install. The calculator will open in its own window and appear in your applications list.
Once installed, the calculator works without an internet connection after the first launch, and your inputs never leave your device.