The contents of this DLC are as follows:

– Gold multiplier + 50% permanently
– Red Potion * 3
– 500 Ruby

This DLC helps you progress early in the game 🙂
It stacks with other DLC.

Note:
– Ruby is a premium currency. You can purchase premium items in Store with it. You can also earn Ruby through achievements in the game.
– Red Potion is a consumable item which boosts EXP Gain for monkeys. You can also get it in the game 😀