In Fallout Shelter, for each day the game is played, bottle caps are awarded to the player, based on the Vault's level of happiness. On the seventh day, a lunchbox is awarded instead of bottle caps. The amount of time until the next evaluation is displayed in the daily report.
The daily report can be displayed by tapping the objectives tab on the Pip-Boy icon and by then switching to the daily report tab.
The amount of earned bottle caps is dependent on the Vault happiness during the evaluation. Based on the happiness rank, an independent variable will net a variable amount of caps.
|Rank||Approximate Requirement||Caps gained|
|A-||90% - 92%||130|
|B+||87% - 89%||120|
|B||83% - 86%||110|
|B-||80% - 82%||100|