Yes, you can have one subscription to LandGlide on both your phone and tablet as long as it is the same operating system (iOS vs Android*). Be sure to be logged into your app store with the same ID on BOTH devices as the one you purchased the subscription with. It should recognize you have a paid subscription and allow you to install the app. For Apple devices: when you are adding LandGlide to your second device and the box to purchase a subscription appears, there should be an option to "restore subscription". Click this and it should add the app to the 2nd device and you will not have to pay.
*The different operating systems have separate billing and authentication processes and a subscription cannot be shared between the two. However, we do have a program that allows you to have one subscription, at the same price, on the different operating systems concurrently. Please see our Corporate Accounts FAQ for more information.