How One Developer Built a $20-30K/Month ChatGPT Extension as a Solo Founder
TL;DR: Saadi, a software engineer, launched a ChatGPT Chrome extension called Superpower ChatGPT within 2-3 days of ChatGPT's public release. The extension adds missing features to ChatGPT's interface. He built it initially for himself using vanilla JavaScript, then joined communities (Reddit, Discord, Slack, Facebook groups) where ChatGPT users gathered to listen to feature requests. He implemented requested features and announced them back to the communities, creating a feedback loop that drove organic growth. The extension was posted on Reddit and went to the top of the subreddit, then content creators organically featured it in 'top ChatGPT extensions' lists without payment. For the first 9 months, the extension was completely free. He started a newsletter 3-4 months in to capture the audience, monetizing through sponsors. After 9 months, he added paid premium features while keeping all existing features free. The extension has been downloaded 270K times with 150K weekly active users. He's the sole developer and makes $20-30K MRR through a freemium model. The strategy focused on building for an existing massive platform (ChatGPT), being extremely early, listening to community feedback, and organic distribution.
Key Insights
- Built and launched within 2-3 days of ChatGPT release by being extremely early to a viral platform
- Joined all communities where users gathered (Reddit, Discord, Slack, Facebook) to listen for feature requests and announce updates
- Kept extension free for 9 months while building audience via newsletter, then monetized through sponsors and premium features
- 100% organic growth through Reddit post, word-of-mouth, and content creators featuring it in top 10 lists
- Building for existing platform (ChatGPT) provided instant distribution vs competing on entire internet
Actionable Takeaways
- Build for existing large platforms (Gmail, ChatGPT, Twitter) or smaller marketplaces (Zoom, Salesforce) where users already exist
- Launch within days of a new platform going viral to capture the early wave before competition
- Join every community where your users gather and listen for recurring feature requests before building
- Keep product free initially to build user base, then layer in monetization through newsletter sponsors or premium features
- Let content creators discover and feature your product organically rather than paying for reviews