It might not have helped Iron Man survive use of the Infinity gauntlet, but for individuals with chronically iron-poor blood, Sanguina Inc. ’s new mobile app could be a lifesaver. Atlanta-based Sanguina released Anemocheck Mobile, an app that measures hemoglobin levels, for the Google Play Store and will shortly add the app for iOS. Anemocheck analyzes a photo of the user's fingernail beds and provides the hemoglobin level on the screen. Hemoglobin levels provide the most common measure of anemia.