Both unlock the same Premium features. The difference is how you pay and what you get:
App store subscriptions (Google Play, Apple, Microsoft) renew automatically and are billed through the store. You handle cancellation through the store. No hardware included.
Bundles (from obdai.app/shop or Amazon) include an OBD-II scanner plus a year of Premium. Bundles bought at obdai.app/shop are auto-renewing subscriptions managed by OBDAI — cancel anytime in your account. Amazon bundles activate with a license code and don’t auto-renew. Either way, the scanner is yours to keep.
Features are identical; only billing and hardware differ.