Michael Que went from job rejections to a height predictor app averaging $100K a month, with around a million downloads across iOS and Android. Here’s how he built and grew GoTall, and the advice he’d give anyone starting out.
Shop for proven ideas
Michael didn’t invent the category. He browsed Acquire, a marketplace for buying and selling startups, and found a similar height predictor listed for $20K. A listing like that is proof someone is already making money. He didn’t buy it. He built his own version instead.
Pick a need that runs deep
Michael filters ideas through Maslow’s hierarchy of needs. A height predictor hits two at once: esteem, because people want the respect that comes with height, and belonging, because they worry about how height affects their love life. The more needs an idea hits, the better.
Ship fast
GoTall made its first sale two days after launch. That was enough to keep going.
Post 10 a day until something clicks
Michael spent about a month posting 10 TikToks a day, testing format after format, before anything took off.
Read the comments
Height videos on TikTok were full of comments like “I’m 15, my mom’s this tall, my dad’s that tall, predict mine.” So Michael started replying to those comments with video predictions. The format blew up, and he was soon getting 10 to 20 DMs a day from people asking for theirs.
Clone the format
He ran the same format on two more accounts, then had his girlfriend try it on hers. Every one of them blew up. That took GoTall to around $3K a month.
Hand it to creators
Michael DM’d about 50 UGC creators a day, offering to teach them the format at cheap rates. It was so simple that creators who had never used the app could film a prediction in minutes. By month five, GoTall was making about $10K a month.
Know your numbers
With one channel and one format, his tracking was clean enough that he knows exactly how many downloads 100K views produces. That told him precisely what each creator and each ad was worth.
Pour ads on what works