When should I start a second product vs. doubling down on my current winner?

The instinct to diversify into a second product before fully extracting value from the first is one of the most common profit-limiting mistakes at the $200–500/day revenue stage.

• Double down first: If your current product is profitable, your priority is maximizing that product's ceiling before splitting your attention. That means: new creative angles, offer engineering (bundles, upsells), email flows if you haven't built them, and geographic expansion. Most winners have 3–5× their initial scale available if you extract it properly.
• Right time to add a second product: When you've hit the ceiling on your current winner, frequency is high, creative fatigue sets in consistently, no new angles are outperforming baseline, and you've built the backend systems. This usually happens at $500–1,000+/day consistent revenue, not at $100/day.
• Second product on a separate store or same store? If the second product serves the same audience (complementary to your current offer), same store can work and the email list becomes a launch advantage. If the product serves a completely different audience, a separate store with its own pixel is cleaner.