In case you did not already receive your physical DiceKeys from https://dicekeys.com/ but still want to use the IOS/Android app, you can use this small Python script to throw some dices that you can manually add to the app.
G6U S4U Y2D U4U T3U
D3L Z4D L2L A3L F6R
E2R O6L N2D X6D K5U
W5R V5R H4U B6U P5R
J6U I5L C3L R6D M4U
G6: Regular dice face, U is the direction and one of U, D, L, R.
Together this creates 124,127,134,662,179,891,202,329,100,571,859,806,502,566,406,865,813,504,000,000 possible keys!
Of course the physical dices are absolutely random throws. This script uses the secrets library to use cryptographical
grade randomness.