The game with the exact phrase "365 Idol Days" in its title was a Japan-exclusive GREE/Mobage social game that required a monthly subscription and Japanese feature phone. It is abandonware – you cannot download or play it normally anymore.

Intimacy and Routine: Presenting a year in the life lets creators show both spectacular moments (concerts, competitions, breakthroughs) and mundane routines (practice, travel, schoolwork). This balance deepens character portrayals, making idols relatable and human rather than distant celebrities.

Aikatsu! 365-nichi no Idol Days (Aikatsu! 365 Days of Idol Days) is the third installment in the

For franchises like Aikatsu, release format shapes community behaviors.

: The "junior idols" featured heavily in this installment.

: Players can scan QR codes on physical cards to obtain specific outfit pieces. Unlike previous games where rewards were sometimes random, 365-nichi no Idol Days allows players to receive the exact item shown on the card (limited to cards from the 2014 1st series to the 2015 3rd series).

The game is built upon several core pillars that distinguish it from its predecessors: