There is for Android, as the game has not been released for mobile platforms . While you may find websites claiming to offer a "verified" download, these are usually unofficial fan projects or malicious software . Official Platforms
If you've seen footage of the game running on mobile devices, it likely falls into one of three categories: Official Mobile Tie-ins : SEGA has official mobile games like Sonic Forces: Speed Battle Sonic Dash , which sometimes feature Sonic Frontiers sonic frontiers apk download verified android