I own Tess Masters cookbook "The Blender Girl" and I absolutely love it! When I found out she also had a smoothie app I had to download it! The app has a user-friendly interface. You can filter certain dietary needs, and I love how the app generates "your perfect blend" based on how you feel, what you need and what you crave. Each smoothie has a summary on the health benefits of each ingredient, and also nutritional information for those that keep a food journal. I like having an app that can generate tasty smoothie recipes, especially when Im food shopping, I can use the shopping list feature. The app also has a very helpful glossary section where it provides information on superfoods, herbs, oils, protein powders and the list goes on. Definitely worth the price!