Store

The Store section of the shop is where you spend actual real money in exchange for coins or keys. Personally I've had no reason to use this section as I am quite happy playing the game and earning my coins and keys as I play through.

I realise this is how the game publisher will make their money back on the production of the game, but for me, there is no interest at all in using real money to purchase items in Subway Surfers, and that I suppose is testament to how the developers have created this game in a way that you can completely enjoy it without the need to spend cash on in-game items.