Hardlight Studio's endless runner Sonic Dash is now free on the App Store, a significant price cut from its $1.99 price when it launched March 7. According to the developer's Twitter account, those that already bought the game will receive 10 revive tokens for free to make up for the price change.

Sonic Dash also received an update recently that added daily challenges to the game, which will reward players with content such as Red Star Rings and new characters. The game was also tweaked to fix balance issues with some obstacles and improve its performance on iPhone 4 and 4th generation iPod touch devices.

This article was originally published on Joystiq.