“If you want the freemium dynamic to really pay out, you need to make sure that the free users are recommending the app — otherwise that doesn't work. If free users are not going to recommend the app and it feels like a trial and it's really capped — you're probably not going to benefit from the organic growth potential of freemium.”

Freemium only works for growth if non-payers would recommend the app — if they wouldn't, give away more

Schlenker offers a practical freemium quality test: ask whether a free user would recommend the app to a friend. If the answer is no, the free tier is not generating the organic word-of-mouth that justifies giving product away. Opal tested different limits on its 'block' feature — users could block 1, 2, 3, or more app categories for free. Three blocks emerged as the sweet spot where free users got genuine value and converted into enthusiastic advocates, while power users naturally wanted unlimited blocks and paid.