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Underpeaks
Design your data model. Get a real Flutter and Next.js app.
Most headless CMS tools stop at an API and a web admin. Underpeaks generates a real Flutter app and a real Next.js app from the same schema. Runs on Supabase, Postgres, MySQL, MongoDB, or Firebase. Self-host it free, or let us host it.
Hey, I'm Anton, a solo developer based in George, South Africa.
I built Underpeaks because I kept hitting the same wall on every project: building the same backend plumbing over and over, and if a client needed both a web app and a mobile app, keeping one data model in sync across two codebases by hand.
Underpeaks generates real Flutter and Next.js code from a single data model. Not scaffolding you throw away, not a black box you're locked into. Actual code you own and can edit.
It runs on five databases (Supabase, Postgres, MySQL, MongoDB, Firebase) through one adapter, so you're not stuck with whatever you picked on day one. Self-host it free with Core, or let us host it with Studio.
What it's not: a website builder. If you already know how to build a frontend, we're not handing you a drag-and-drop editor to fight with. We do the backend. Your frontend stays yours.
Honest limits: the dedicated Flutter/Next.js SDK is still on the roadmap, not live yet. This is v1, built by one person, and I'm here all day to answer anything.
What's the most annoying backend problem you keep rebuilding on every project?
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About Underpeaks on Product Hunt
“Design your data model. Get a real Flutter and Next.js app.”
Underpeaks was submitted on Product Hunt and earned 8 upvotes and 1 comments, placing #45 on the daily leaderboard. Most headless CMS tools stop at an API and a web admin. Underpeaks generates a real Flutter app and a real Next.js app from the same schema. Runs on Supabase, Postgres, MySQL, MongoDB, or Firebase. Self-host it free, or let us host it.
Underpeaks was featured in API (98.7k followers), SaaS (44.5k followers), Developer Tools (520.4k followers) and GitHub (41.4k followers) on Product Hunt. Together, these topics include over 185.8k products, making this a competitive space to launch in.
Who hunted Underpeaks?
Underpeaks was hunted by Anton Wentzel. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Underpeaks stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Anton Wentzel