I would agree and think it's equally important to focus on flat lining retention well within 30 days. Most products that fail, fail because retention falls and

I would agree and think it's equally important to focus on flat lining retention well within 30 days. Most products that fail, fail because retention falls and falls until it hits 0. If you find product-market fit that establishes a flat line of say, 10-30% retention within ~30 days, it likely means you've found a user who actually values, and continues to value, using your product. Just my 0.02