The version number of your Arsenal Remote app can be found in two places:
On the app welcome screen
If Arsenal isn't connected to your camera, you can find the version number on the app's welcome screen.
If you're already on the connection screen, tap the back arrow in the upper right to access the welcome screen.
In the Settings menu
If Arsenal is already connected to your camera, or if you're in the app's demo mode on iOS, tap the gear icon in the upper left to access the Settings menu. Scroll to the bottom to find your version number.