サクッと投票・グループの決定を数秒で

サクッと投票. Use a Poll when the answer is obvious — you just want a count. Voters tap an option and that's it.

じっくり決める. Use a Decision when you're weighing trade-offs — voters AND the creator add reasons for each option (pros & cons). The winning option is whichever gets the most votes, but the side-by-side reasons help you see WHY.