Compendium

The Compendium is an app on Tsuki's phone, where the player can track their progress.

Details

Specifically, the Compendium is a catalog of all items, furniture, and fish in the game. It features three tabs, one dedicated to each.

Each tab features an icon pertaining to its contents, those being a bag for items, a seat for furniture, and a fish for, well, fish. Just under the icon for a tab is two numbers, separated by a slash, like so: 86/162. The first number is how many items in that category the player has collected, and the second number is the total number of that type of item in the game.