The PADI (suba diving) app barely works without constant internet connection, especially eLearning is useless with it once you are offline / have a shaky connec

The PADI (suba diving) app barely works without constant internet connection, especially eLearning is useless with it once you are offline / have a shaky connection. Scuba diving spots on the world are rarely well covered with internet and even if they are, still many people don't have the roaming/local SIM solution for it. Guess where you want to use that damn app the most?