Shop – Buy stuff.
Items – Shows all your items and quantity.
Album – Shows all your collected idols.
Idol Topics – Shows the loading screen comics.
Producer Rank – Shows your rank, and requirements for each rank.
Achievements – Shows your achievements, but only if you have a Japanese google account I think?
Profile – Your details, including game ID (friend code)
Support – FAQ and various other links and contact info.
Help – Glossary of game terms… in moon runes.
System Settings – Various system settings.
Live Settings – Various settings for your live performances.
Data Migration – You’ll need to bind your game to a Bandai Namco ID, but you’ll need a Japanese account (easy to set up).
Title Screen – Back to the title screen.
Sign In – Sign in with your google account… if it’s Japanese.
Once you get here, you can purchase Star Jewels. If you click on the icon, it will bring up your google account and you can use your preferred way to hate your money. For iOS, I have no idea, I assume you need those funky iTunes point card thingies *shrugs*
Below is actually from the Live Settings from the Live briefing before you start a song. You can set the speed of the song and even set it to all songs.