Tap anywhere to change direction. Hold a line to build speed; tapping scrubs it off. Ski School walks you through it the first time you play.
Finish every route on your current mountain. The next one opens automatically, and Coach will tell you when it does.
One star for finishing. Two and three stars are for beating that route's target times, which you can see in the HUD while you ski.
Progress is stored on your device only, so deleting and reinstalling the app clears it. There's no cloud save, and unfortunately no way to recover it.
No. The only ad is optional: after a crash you may watch one for a single extra life. Nothing else in the game is affected by it.
Please email a description and a screenshot if you can, along with your iPhone model and iOS version. It genuinely helps.