Catching up has never been this easy. Signal to friends that you're free to CatchUp with a single button. Share your link with friends and family so they can subscribe to receive SMS/ text messages whenever you're free. Effortlessly join one-on-one and group calls. Keep in touch more, think about it less. Any time you’re free to talk, CatchUp! Currently only compatible with US, Canada, and India mobile phone numbers. VOIP phone numbers are not supported at this time.