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His study tool passed $100 a month, and the feature that did it was letting students bring their Anki decks

He made a tool for students that started as a simple quiz solver extension and grew slowly to just over $100 in monthly recurring revenue, with very little marketing. A month ago he reverse engineered Anki using AI, so anyone can bring their Anki deck and study it in his tool. He says that is the thing that worked.

$100a month

How it works

  1. Build a quiz solver extension
  2. Grow it into a study tool
  3. Reverse engineer Anki with AI so users can import their decks
  4. Watch revenue pass $100 a month

Why it’s worth knowing

The growth feature was not new content. It was letting students bring the flashcards they already had.

Where it’s from

Summarized from a public post on reddit.com. See the original ↗

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Every idea is a real post from someone who tried it, summarized in our words, with a link to the original. App names are swapped for plain words.