GTM Sauce

Go Tall · B2C · height prediction app for teens

Ask every question commenters volunteered, then show the answer after payment

91% of users reach the paywall despite the long onboarding

Workedonboardingpaywall

What they did

Commenters kept adding more personal details to get more accurate predictions, so onboarding asks all of them: a long quiz on top of CDC growth data, each question linked to research studies that adjust the prediction (e.g. a puberty-stage quiz). The final height prediction is behind the paywall ($35/year or $5/week).

What happened

About a 91% paywall show rate despite the long onboarding; the guest is most proud of this part.
Stage
product

In their words

This Stupidly Simple App Makes $100K/Month

Play from 11:01
10:44

Pat WallsCool, simple tech stack. Okay, now, I'm excited to see the app. I like talking about the idea, how you built it, the growth, all that stuff. But now I want to see what this app is. Can you show me the height predictor app that makes $100,000 per month, and give me just a demo of how it works, so that we can see?

11:01

MichaelWhat I'm most proud of is the onboarding. Basically, as I'm predicting the height, the users kept on giving like more of their own information to the comment, because they want a more accurate height prediction. And so that just resulted in the onboarding being like super long.

11:17

Pat WallsThe more information that you can get, the more predictive of the height you could be.

11:21

MichaelExactly. And then the app actually does, in the beginning, it didn't, but it actually pulls a lot of like research papers to actually give the height prediction. So the base is like the CDC data of like, you know, whatever your doctor gives you at the doctor's appointment. But then all these other questions have like links to research studies that we use to adjust your like final height. So this is like a puberty quiz. This will see like where you are in puberty, and that will have a very big effect of like how much you actually are. And this paywall has about like a 91% paywall show rate, despite being pretty long. Yeah, I'm kind of just skipping over everything, cuz I've seen this like a hundred times.

12:00

Pat WallsAnd do you have to pay and subscribe for the app to see the the ultimate prediction?

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Tags: long-onboarding, quiz-onboarding, result-behind-paywall