I came across this idea from Brian Balfour’s Reforge program. How can you tell if your product is providing value to the market, aka that you’ve found the infamous “product market fit?” One way is to look at your retention curves. You expect to see some early dropoff; not everyone you market to is your core audience. But if your curve flattens out, you have some powerful evidence that there is a market out there that is unlocking enough value from your product to keep coming back. If the curve doesn’t flatten out? Time to keep iterating on solving a deep-seated need for your users.
Inspired by this post