TechCrunch Startup News The tooth fairy just got reimagined for the tech-savvy generation; also, Lemon Slice nabs $10.5M from YC and Matrix to build out its digital avatar tech
Dec 23, 2025
A tech-savvy twist on the classic Tooth Fairy emerges, allowing kids to receive personalized video updates and encouraging good brushing habits. Oliver Finel's invention fills the gap left by Santa trackers! Meanwhile, Lemon Slice secures $10.5 million to innovate digital avatar technology, enabling interactive avatars for AI chatbots from a single image. Their vision aims to enhance user experience with customizable, engaging video interactions. Big plans are in store for personalized features and international expansion!
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Creating A Tooth Fairy Adventure
- Oliver Fennell built Tooth Fairy Tracker after making a personalized video for his nephew and noticing a gap in Tooth Fairy experiences online.
- The site delivers evening video updates and a morning congratulation to create a day-long, anticipatory experience for kids.
Start Simple Then Add Personalization
- Launch simple core experiences first and iterate with personalization later to expand value and monetization options.
- Fennell plans a $20 subscription with six personalized Kiki visits and added features like name-calling and hobbies to increase engagement.
Use Partnerships To Extend Reach
- Partner with complementary offline channels like pediatric dentists to reduce anxiety and reinforce healthy behavior.
- Fennell plans pre-appointment videos and post-visit rewards to make dental visits more positive for kids.