[sandworm101]

Forget any app. Just put on your seatbelt. If you are wearing a seatbelt, the worst that will happen is spilled coffee.

I cannot stand the sound of a hundred belts unclicking all at once the moment the seatbelt sign turns off. Idiots. The presence of a seatbelt across one's lap is the least of the various tortures associated with modern air travel.

[oron]

Some of the most severe injuries occur among crew members because they must rush to secure passengers in their seats, often being the last to fasten their own seat belts. Additionally, when turbulence reaches a certain intensity, the aircraft must undergo costly structural testing on the ground, which disrupts the airline's schedule significantly.

[pavel_lishin]

To be absolutely pedantic, the worst that will happen is the unbuckled dingdong sitting next to you becoming a loose item and banging into you.