How do I transfer my app when I purchase a new phone? Alyson July 29, 2020 21:23 Updated No problem. Just log out and delete the app from your old device before installing and logging in on your new device. Related articles Can I buy just the app? Is there a trial period for NuCalm? What is the difference between NuCalm and other apps or devices in the market? How long should my NuCalm session be? Are there any side effects of NuCalm?