The Pulse
Cal AI Co-Founder Zach Yadegari Raises $10M for Persona
Zach Yadegari, Cal AI’s 19-year-old co-founder, has raised $10 million for Persona, a personal AI assistant startup. Persona is testing its assistant through iMessage and plans to sell a $179 wristband in December.
AI.info Team · Written with AI ·
“All of the utility apps that you use on your phone day-to-day, whether those are apps for shopping, whether it’s Uber, DoorDash, your email — these are all collapsing and will collapse into a single super app powered by an AI assistant,”
Zach Yadegari, Persona founder and Cal AI co-founder
Yadegari is putting $10 million behind that bet. Persona, his new personal-assistant startup, raised the funding in a round led by Vine Ventures, with Z Fellows founder Cory Levy and Collective Global also participating, TechCrunch reported on October 8, 2026.
The 19-year-old left MyFitnessPal in June, months after the company acquired Cal AI, the calorie-tracking app he co-founded. Persona is his next startup, built around an AI assistant that can handle everyday tasks through messages and, eventually, a wearable wristband.
From iMessage beta to a $179 wristband
Persona is available as a free beta over iMessage, where users interact with the assistant through text messages. Yadegari told TechCrunch the beta had attracted a few thousand users. The assistant can order food or rides, take notes, book travel, and answer questions and emails.
The hardware is planned for December and is priced at $179. Yadegari says the band can activate through a button or a flick of the wrist; it is not designed to listen continuously. The company is also developing an app, while the messaging beta offers an early way to try the assistant before the wearable arrives.
Persona has already recorded five figures in preorder revenue, Yadegari told TechCrunch. That figure is an early sales signal, not evidence of broad demand: the company has not yet released the band to customers.
Cloud processing, with user approval for purchases
The wristband does not run Persona’s AI model or store user data, according to Yadegari. The assistant processes information in Persona’s cloud, with data encrypted in transit and at rest; the company says users can delete their data. Those are company-described protections, and the model’s cloud-based design means user information still leaves the device to be processed.
Yadegari also says the assistant is being designed to resist phishing and prompt-injection attempts. Persona says its agent cannot see users’ credit-card details, and that purchases will require approval, with payments handled by outside services such as Stripe Link.
The service’s commercial model adds another condition: Persona plans to show sponsored products during shopping research. Yadegari says the assistant will not know which recommendations are ads, and that its suggestions will reflect a user’s preferences. The approach puts sponsored results inside the same assistant expected to advise users, making the separation between recommendation and advertising central to how Persona will earn money.
Cal AI’s sale preceded Yadegari’s next venture
MyFitnessPal acquired Cal AI in March for an undisclosed amount. The calorie app had generated more than $30 million in annual revenue in under two years, according to information MyFitnessPal previously gave TechCrunch. Yadegari and his co-founders initially joined the buyer and continued working on Cal AI; Yadegari left in June to start Persona.
Persona is also working with another co-founder whose identity has not been announced. For now, its reported scale is a few thousand beta users and five figures in wristband preorders, while the product’s main hardware remains scheduled for December.