Think you have a good pulse on how your cat is feeling? Tably is a new AI-powered app that can help confirm whether your suspicions are correct. Simply use your smartphone camera to take a picture of your feline friend and the app will use machine learning to decode its mood. Sylvester.AI, the company behind the app, writes that Tably is based on the Feline Grimace Scale, a proven tool used by scientists to determine pain in animals based on facial expressions. A scientist can score expressions both in real-time or from photographs based on the presence or prominence of things like whisker changes, ear positions, and more.