Anna Zhou and Vivian Shen, the co-founders of Toastie, join Georgie Healy for one of the warmest and most personal conversations the show has had. Two software engineers at Google by day, they have quietly built one of the most thoughtful health tracking apps in the world by night, all without spending a single dollar on marketing.

Toastie was born from a problem they were both living. Anna was diagnosed with an autoimmune disease and handed a few photocopied sheets to figure out the rest of her life from. Viv has been managing PCOS for years, experimenting with medications and diets on her own. They realised the tools available simply were not built for people like them, so they built one themselves. Today Toastie helps users track symptoms, food, body signals, lab reports and scans, surfacing the patterns and irregularities that would otherwise go unnoticed.

In this episode they unpack why almost one in two Australians live with a chronic illness but no one talks about it, why slapping AI on everything is the wrong instinct and how they decide which features actually need it, and the cold LinkedIn email that landed them their first global partnership before they even had a product. They also share why ChatGPT and Gemini are not enough when the stakes are this high, what their users actually write to them in the feedback form, and the story of the user who quietly security audited their app and was so impressed they wrote in to tell them.

Plus the early hackathon they won by faking the backend in real time, why they call themselves boomers when it comes to social media, the worst startup advice they have ever received, and a special offer just for In The Blink of AI listeners.

🎁 Use promo code ITBOA2026 to get a 90 day free trial of Toastie

🍞 Find your Toastie personality: https://toastie.au/quiz