Standing out amidst the rapid global growth of generative AI is no easy feat. A generative AI calorie tracking app developed by a high school student surpassed 8.3 million downloads by July of this year, generating $1.4 million in monthly gross revenue, making it one of the fastest-growing AI health management apps. Eighteen-year-old Zach Yadegari began his entrepreneurial journey while still in high school. His Cal AI launched in May 2024 and quickly became a hit in just over a year. Simply scanning food with your phone identifies calories and nutritional content, making it a popular choice for post-Y2K users who are now conscious of their appearance and diet.
Just take a photo with your phone and AI will instantly analyze calories and nutritional content.
Cal AI's functionality is quite basic yet highly effective. Users simply take a photo of their meal, and artificial intelligence instantly determines and analyzes the food's type, portion size, calories, and nutritional content, including protein, fat, and carbohydrates. This eliminates the need for manual calorie input or weighing, streamlining the traditional diet control process.
Zach Yadegari explained that his initial entrepreneurial vision was simple: to develop an app that would simplify the process of tracking calories and maintaining a balanced diet. The app has since been highly recognized by the market. He told CNBC Make It that after deducting the commissions from platforms like Apple and Google, Cal AI's monthly gross profit has stabilized at $1.4 million, and the company currently has 30 employees.
The motivation for starting a business comes from wanting to date girls
Zach's entrepreneurial inspiration didn't come from textbooks or entrepreneurial mentorship, but rather from his own poor fitness experiences. He realized that building muscle wasn't enough just by going to the gym; he needed to manage his diet to grow muscle and attract women. However, he used a calorie-counting app for just three days before giving up. Manually entering data and weighing food each time was impractical.
It wasn't until 2023, with the rise of ChatGPT and generative AI, that Zach realized these new tools might offer a solution. He and his technical partner, Henry, began developing a new app. During their high school summer break, they moved to San Francisco, stayed at a hackathon camp, and slept in offices throughout the summer as they developed the product, ultimately launching it in May 2024.
He started looking up at the age of seven and became the founder of a multi-million dollar app at the age of eighteen.
Zach's rise to fame wasn't overnight. Even before founding Cal AI, he demonstrated exceptional intelligence and talent, having begun programming at the age of seven. In his freshman year of high school, he developed a website called Totally Science to help high school students bypass the campus internet blockade and play games. He then raised his first startup capital through advertising revenue. This capital was later fully invested in the development of Cal AI, leveraging influencers to rapidly attract a large user base. Zach stated that Cal AI's current marketing budget is still focused on KOL partnerships on social platforms like TikTok and Instagram, rather than traditional media. He explained that instead of relying on expensive advertising, using creative content to engage young people in sharing and spreading the word is crucial for startups.
Entrepreneurial Challenge: Consumer Education Gap
Despite its innovative features, Zach admits that Cal AI still faces a number of misunderstandings. For example, users expect the AI to have "see-through" abilities to identify ingredients hidden by soup, or mistakenly believe the app automatically processes credit card payments and refunds. He explains that payments and refunds are handled by Apple stores, and the company does not access payment flows or card numbers.
Plans to start more companies to continue helping others
Zach is already enrolled in college, but he's still running Cal AI full-time. He and his co-founders rent an apartment near campus, trying to balance work and school. His only concern is interrupting his studies. He hopes to balance his studies and maintain a healthy social life while starting his own business. He told CNBC that he doesn't intend to stop here and plans to start more companies to help even more people.
CAL AI Profile
Product Name: CAL AI
Function: Scan food photos with AI to automatically analyze calories and nutritional content
Launch time: May 2024
Cumulative downloads: 8.3 million (as of July 2025)
Monthly gross profit: Approximately $1.4 million (after deducting the App Store's cut)
Team size: 30 people
Business model: Free and paid in-app upgrade subscription
Cal AI not only capitalized on the popularity of generative AI but also addressed dietary control issues. Zach Yadegari's entrepreneurial story proves that in the tech world, age is never a barrier; action and creativity are key.
The article " He started programming at age seven, founded the CAL AI calorie analysis app at age 18, and achieved monthly revenue of $1.4 million" first appeared in ABMedia ABMedia .
