Indiana doesn't have a specific auto-renewal law, but the DTPA (no specific auto-renewal law) (Ind. Code § 24-5-0.5-3) plus federal FTC rules protect your right to cancel.
Ind. Code § 24-5-0.5-3
Penalties: Treble damages for knowing violations plus attorney fees
SubScrub automatically cites Ind. Code § 24-5-0.5-3 and federal laws