Roblox apparently has done this for some desktop users via its icons. As you’ll see in the tweet below, the game has changed the icons for the player and studio programs.

Launch Building Simulator on Roblox. Tap the bird icon on the left side of the screen. It is next to the volume button. ... Codes offer important in-game rewards in Roblox Building Simulator.

Open Build a Plane Tycoon on Roblox. Click on the ‘Codes’ icon located on the left side of the game. Copy and paste the code from this guide into the ‘Enter the code here’ textbox.