With its adorable animal avatars and fun challenges, this App Store Award–winning water tracker makes staying hydrated feel like a game.

What we love: How Waterllama takes into consideration all sorts of factors to recommend personalized hydration goals, including the local climate and your gender, weight, and activity level. The app also considers the hydration value of every drink when calculating your progress. Coffee, for example, doesn’t hydrate as efficiently as water, while hard liquor can actually dehydrate.

Quick tip: A default serving is 8 ounces, but you can get granular with your tracking. After tapping one of the over 40 beverage types (you can also add your own), swipe up or down on the cup to adjust the number of ounces.

Meet the creator: Husband-and-wife team Vitalii Mogylevets and Polina Komisarova-Mogylevets have always loved llamas. “For our wedding, Polina and I wanted to have a photo shoot with llamas,” Vitalii says. “We’ve added more characters in the app, but the llama is everyone’s favorite.”