Spend money to avoid waiting for a timer to expire.
"Only the game currency but you can buy that currency with real money so I count that- it's to speed up the timer on the vegetables you grow to complete cooking orders to make your cats happy and to level up their affection with you to get hearts to unlock the next chapter in the storyline which is the only reason I got this game"
"You can pay in-game currency to skip waiting or upgrade the amount of waiting time to be shorter."
"Playing a puzzle costs between 10 and 20 tokens, and you can buy more tokens to play more puzzles."
"You can spend money on energy and on gems, which you can use to skip timers."
"several modes of the game have limited lives that replenish over time, others have limited lives per play. both give you the option to watch an ad or spend in game currency (which can be earned by playing but tend to be fairly scarce w/o paying) to get a life back if you lose them all"
"You can skip a lot of things by spending gems which, most of the time, can be gotten only by spending real-world money"