Studykaki — [better]

The first version was embarrassingly simple. It was a shared Google Calendar embedded into a free WordPress site. The feature was minimal: a user could post a question on a digital whiteboard, and anyone in the same time zone could annotate it. The tagline read: “Stuck? Draw it. Solve it. Together.”

Worst of all, a new feature—an AI tutor that Lin Wei had reluctantly added to compete with ChatGPT—began answering questions instantly. And while it was efficient, something was lost. Users stopped explaining why an answer worked. They just pasted the AI’s output and moved on. studykaki

But Lin Wei saw a problem. The platform was becoming… noisy. The first version was embarrassingly simple

“You’ve got this. And even if you don’t, we’ve got you.” The tagline read: “Stuck

Revenue became a problem. Without VC money, they introduced a "Patron Pass"—a voluntary subscription for users who could afford it, which unlocked cosmetic tree skins and nothing else. To everyone’s surprise, 12% of users signed up within the first month. They weren’t paying for features. They were paying to keep the lights on. Today, StudyKaki is not a unicorn. It is not a household name. It has 2.3 million users—modest growth by tech standards—but an extraordinary retention rate: 78% of users who join stay for more than a year.