Dreading a phone call? Practice it first. Murmur is an iOS app that lets you rehearse real-life phone calls with AI before making them for real. Call your doctor about test results, negotiate rent, prep for a job interview, or handle a difficult return - in a safe, judgment-free space. Pick a scenario (40+ built-in, or create your own), have a real voice conversation with AI, get instant feedback on what you said and how to improve. Not a chatbot - a real voice call simulator with AI coaching.