A: No. iOS does not allow APK installation, and Apple’s App Store only serves the latest version. You cannot downgrade without jailbreaking (which voids your warranty and security).
However, there are to get more coins and keys faster:
: Includes infinite coins, keys, and boosters, allowing for immediate purchase of all characters and hoverboards. Unlocked Content
: Go to your phone's Settings > Security and allow installations from "Unknown Sources." Download the APK : Locate the version 1.99.0 mod file. Install : Open the downloaded file and follow the prompts. Launch : Open the game and check your coin/key balance.