KRNL's One More Shot AI lets musicians make lip-synced music videos, lyric videos, covers and promotional social assets. KRNL's CEO says the product reached an approximately $710,000 monthly revenue run rate after one year. RevenueCat serves as the monetization source of truth across App Store, Google Play and Stripe; the number is a company case-study disclosure, not an audited financial statement. Subscriptions provide access, while additional packs monetize continued creation. The team uses retention, payback period, pricing and LTV to decide where to keep investing. The business mechanism is a clear user niche, repeated creation and measurable extra spending—not AI alone. Risks include generation cost, paid-acquisition payback and volatile creator demand.