Sekai raised $20 million in a Series A led by Khosla Ventures and Connect Ventures. Additional investors include a16z Speedrun, Mayfield, A*, MVP Ventures, 359 Capital, Parable VC and 645 Ventures. Total funding is now around $30 million.

The app lets people create mini applications by describing what they want in a text prompt. Users can also remix and modify apps that others built. Examples range from outfit-selection tools based on weather and mood to personality quizzes and interactive birthday cards.

The numbers stand out: over 15 million mini apps created, more than 200,000 generated daily, and average daily usage exceeding one hour per user. Early traction came from shareable creations - particularly interactive birthday cards that spread virally.

Founder Lucky Zhang positions Sekai as the opposite of doomscrolling: "The way to get rid of doomscrolling is asking you to interact." This is his fourth startup - Apple acquired his video e-commerce company Yi+ AI in 2017, ByteDance bought his Latin American short-video platform Blacktail in 2020.

Sekai originally focused on anime fan-fiction experiences before pivoting to broader app creation as AI coding models improved. Connect Ventures' Nicole Quinn explained her investment: "The fact that customers are spending over an hour a day on Sekai is the kind of signal that there's true obsession with a product."

The company is now hiring engineering and product, and exploring creator monetization through apps and interactive fan experiences.