Go Tall · B2C · height prediction app for teens
Reply to TikTok commenters' heights with videos predicting how tall they'll get
First viral format; 10-20 DMs a day asking for predictions
What they did
What happened
- Stage
- launch
In their words
This Stupidly Simple App Makes $100K/Month
MichaelSo that's when I began like building it, and then I remember like after 2 days of launching it, I already had the first sale. And that was also a huge amount of validation for me, because I didn't even get that many views, and I was like, "Wow, people really want this."
MichaelAnd then the second thing is that on TikTok, if you just look at any sort of height video in general, I would see people saying like, "Oh, I am 6 ft, I'm 15, my mom's this height, my dad's this height." People just want to give that information, and I assume like they wanted to get predicted, and so one of my first viral formats was just replying to those comments and predicting their height.
Pat WallsDude, that's super cool. There's two things you mentioned that I think are like really cool is that you went on acquire.com and you found an idea that was already proven. You didn't buy it, I'm assuming, and you went and just built it yourself. We've talked to other founders who have done the same thing, so I think that's a super cool little tactic that you mentioned there.
Michael… "I'm not going to build this anymore." Whereas even in today's age, like there's still calorie trackers doing 30k a month when you have Cal AI. Like that does not make sense to me at all. And I feel like just seeing that sort of phenomenon happening, it just proves that no idea like has already been done before, and you can always try to do the same idea someone else did and still make it successful with your own tweaks and things like that.
MichaelThe other thing, you want to make something that really hits with people's needs. I had my TikTok, and I would have like 10, 20 DMs a day of people requesting their height to be predicted. People like really care about this like height prediction thing. There's some problems that you can really just see, and you're like, "Wow, this is an actual painful problem."
MichaelYeah, I think the Maslow's hierarchy of needs is a really good framework for like, what do people like want. If you think about your app idea, ideally, it can fit into like one of these categories. The more like things it hits, the better. So for example, for me, the the height prediction app, one, it hits the esteem part, because people want to know that they're going to be tall because they want, you know, respect from other people. Height is …
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More from this episode
- Browse Acquire.com for small apps for sale, then build your own versionFirst sale 2 days after launch; now ~$100K/month
- Post 10 TikToks a day for a month until one format worksFound a repeatable format; knew how many downloads 100K views brings
- Copy your winning video format onto two new accounts and a friend'sAll three accounts blew up, showing the format was teachable
- DM 50 people a day asking them to make your proven, easy videoCreators worked cheaply; with founder content reached ~$3K/month
- Improve your paywall once videos bring steady installsRevenue grew from ~$3K to ~$10K/month, alongside more scaling
- Try more video formats once the first one keeps working~$30K/month by month five
- Put ad money behind the videos that already work organicallyScaled from ~$30K to over $100K/month
- Ask every question commenters volunteered, then show the answer after payment91% of users reach the paywall despite the long onboarding
- Let the height prediction change weekly as people log sleep, meals and stretches
Tags: tiktok, comment-reply-videos, viral-format, demand-signal