How a 19-year-old's app hit $30M using an army of paid influencers
Cal AI, an AI calorie-tracking app, made more than $30 million in revenue in two years, and MyFitnessPal bought it in March, TechCrunch reports. Its founder, Zach Yadegari, is 19. On stage at TechCrunch Disrupt last week, he explained the growth engine: pay lots of influencers to post, and treat it like math. If you make content, this is worth understanding from both sides.
The playbook
- Find proof first. An early influencer post brought in about 1,000 new users in two days. That was the signal to scale.
- Recruit fast. Cal AI then paid as many influencers as it could to post about the app.
- Treat reach like a formula. Yadegari said results were predictable: each post reached a certain number of viewers, and a share of them signed up.
- Pay for results, not posts. Deals were negotiated against reach. Creators were promised a fixed amount for hitting a target level of usage, and kept posting until they reached it.
- Pick tight-knit audiences. Creators with close communities were easier to measure and convert.
- Many were students who mostly wanted the money, he said.
- One post, 1,000 users An early influencer post brought about 1,000 new users in two days.
- Pay as many creators as possible Cal AI recruited influencers quickly once the first results proved the idea.
- Views in, sign-ups out Each post reached a predictable audience, and a share of viewers converted, the founder said.
- Fixed pay for a usage target Creators earned a set amount for hitting a target, and kept posting until they did.
- $30M+ revenue, then a sale More than $30 million in revenue in two years. MyFitnessPal bought the app in March; the price was not disclosed.
Source: TechCrunch, Oct 15, 2026, based on the founder's remarks at Disrupt. Not independently verified.
What the story leaves out
These details come from Yadegari's on-stage remarks, and TechCrunch did not independently verify them. The article does not say how many influencers Cal AI used, what they were paid, or which platforms they posted on. The sale price was not disclosed either.
What happened next
Yadegari has already moved on. In October he launched Persona, an AI assistant startup that has raised $10 million, meant to work through iMessage, apps, email and phone calls. We covered it here.
What it means for creators
Brands like Cal AI think in cost per sign-up, not cost per post. If you create content, know your numbers: your typical views, how engaged your audience is, and what a result is worth to the brand. Then price on results you can actually deliver, and get the terms in writing before you post.
Sources
- When it came to Cal AI's viral success, a small army of influencers paid off, TechCrunch, Oct 15, 2026