Are you a fan of sand-combing apps, nature sound apps, and other relaxation apps? If so, then you will probably enjoy Ripple HD. It’s universal, so you can use it on your iPhone, iPod touch, or iPad.

The app is very simple. It uses augmented reality to turn your world into water. With your finger, you make ripples in the water. Use the front or rear-facing camera. Listen to rainfall in the background, or just the sound of the ripples you create.

Check out my photos below, or the developer’s video here to get a better idea of what the app does.

Would you like to win a copy? If so, simply comment below for your chance to win. Five lucky readers will receive a promo code. Contest ends November 18 at 10:00 a.m. EST. Good luck!