Prize EV on Android

It runs in Firefox, with the free Tampermonkey add-on. Samsung Internet and Chrome on Android can't run add-ons.

1. Install FirefoxSkip this if you already have it.Firefox on Google Play
2. Open this page in FirefoxCopy this page's address into Firefox, or scan the QR code again and choose Firefox.
3. Add Tampermonkey to FirefoxTap Add to Firefox, then allow it.Tampermonkey for Firefox
4. Install Prize EVTampermonkey opens an install screen: tap Install.Install Prize EV
5. Open any competition page in FirefoxThe window appears by itself. Tap the minus to hide it to a small button.

Updates arrive by themselves through Tampermonkey. Everything is worked out on your phone from what the page shows; nothing is sent anywhere.