As of 2015, "Subway Surfers" is free to download on Google Play, the App Store, the Microsoft Store and the Amazon Appstore. The mobile game's developers, Kiloo and SYBO Games, offer in-app purchases for coins, keys and starter packs. Players earn free coins and keys by playing the game.
Other methods to earn free currency include watching sponsored videos, following the developers on social media such as Facebook and Twitter and receiving coins when a friend achieves 50 runs.
Kiloo and SYBO Games provide free updates for "Subway Surfers" that include new awards, characters and areas. All in-app purchases are optional, and most of the game's content can be experienced without spending money.