Yes, the web app does work seamlessly without an internet connection. When you have a connection again, all your work will be synced and saved to the RED Cloud. We have even built-in Offline Data Recovery if you happen to access your RED Calc Pro account from another device when you still have offline data stored on the first device. We’ve got you covered!
Notice the RED Cloud icon in the upper right section of the RED Calc Pro screen below on a smartphone. This RED Cloud icon always gives you the status of your internet connection and whether data is being transferred to or from the Cloud.