Vim Mastery Trainer

Learning Vim shortcuts is hard; most people give up because practice is boring and scattered. Vim Mastery Trainer uses spaced repetition to teach vim commands interactively in your terminal with daily challenges and streaks. Target: developers wanting to level up their editor skills.

Vim and Neovim adoption has seen renewed interest off the back of the Neovim plugin ecosystem boom and a broader shift toward keyboard-driven developer workflows, so the timing isn't bad. The closest substitute is Vim Adventures, a browser-based game that covers basics but doesn't go deep on muscle memory for advanced workflows — there's no serious spaced-repetition competitor in the terminal-native space. The revenue band of $200–1k/month is realistic but also the ceiling: developers are notoriously resistant to paying for tooling education, and the audience who'd pay is small relative to the much larger group who'll just tough it out with a free cheatsheet or vimtutor. The biggest risk is that Vim is finite — once a user has internalized the commands that matter to them, churn is permanent and there's no natural expansion product to sell them next.