The CurlingRocks! app can be downloaded on your phone from the Google Play Store or Apple App Store. It can also be downloaded from the Windows Store on your Windows computer.
This is version 1. It’s designed to help new curlers understand how the rock reacts to different rotation directions, different speeds of throws, and sweeping. Players can use it to practice and experiment with different strategies. For experienced curlers it turned out to be addicting to play against yourself or with someone sitting beside you.
Version 2 is scheduled for release this fall. It is a complete rewrite using a more powerful game development engine, which will allow for more advanced functionality. Version 1 games should automatically upgrade to version 2 when it’s released.
The Tutorials page has a strategy video using the app.