I coded for years. Now I only vibe-code – and Leanfinit is the Replit alternative I switched to
The free Replit alternative built on Flutter — and what the same app really costs on Replit
I started with Python. Then I moved to React, like everyone did. For the last several years I’ve written Flutter — and I’m not going back. Then something else happened: I stopped typing code altogether. Today I work as a CTO, and I only vibe-code. I describe what I want, and AI builds it.
The tool I use for that now is Leanfinit. Friends keep asking why I picked it over Replit. Here’s the short version: it’s free, it builds on Flutter, and it gets your idea live instead of leaving it in a preview window.
Why I went looking for something like Leanfinit
In 2025, Replit’s CEO shared two numbers in an interview with Growth Unhinged: the agent had created more than 2 million apps in six months, and 100,000 of them were hosted in production. That’s about 5%.
Ninety-five apps out of a hundred never reached a single real user. Someone had an idea, paid for the agent’s work — and the app quietly died between “it works in preview” and “it’s live.” Describing an app is the easy part. Running it is the trap.
For the App Store and Google Play, my guess is the number is at least ten times lower — under 0.5%. That’s my estimate. But Replit’s own docs say publishing to Google Play is not yet supported, and every extra step is a place where an app dies.
That 5% is the whole reason Leanfinit makes sense to me. If 95 out of 100 ideas die before launch, trying them should cost nothing.
Leanfinit is free. Here’s what the same app costs on Replit
Leanfinit is completely free during the beta. No paid plans, no credit card, no watermark, no bill at the end of the month. They spell out exactly what “free” means — and how it compares to the four kinds of “free” other builders offer — here.
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Now compare. Replit’s free plan gives you one published app, with a badge, and it expires in 30 days — so you have to pay anyway a minimum of $20 every month to keep your app alive. Replit’s own announcement says complex tasks “may cost more.”
Here’s what people actually reported: one user’s first week with Agent 3 costed $1,000 (usually $180–$200 a month) — that doesn’t sound like their marketing promises of $20, right?
Every redesign, every “fix this bug,” every “no, not like that” is metered on Replit. On Leanfinit it isn’t. Leanfinit also published the full math on what a personal app costs in 2026 — freelancer, no-code builder, AI chat — in this breakdown. The “from $20/mo” is never the whole story.
The same attempts on Leanfinit — $0 during the beta.
Leanfinit builds on Flutter. That matters more than you think
Here’s where my years of writing code kick in.
Most popular vibe-coding tools generate React. Replit builds mobile apps with React Native and Expo, and on the web users on its forum complain the agent switches to React even when you ask for plain JavaScript.
I wrote React for years. I know why everyone picked it: huge ecosystem, tons of training data for AI models. But I also know what it feels like on a phone. After moving to Flutter, I can’t unsee it — Flutter apps are noticeably smoother and more stable, with consistent rendering on every device and none of the bridge-shaped compromises I fought with in React Native. That’s my opinion as a developer, and I’ll defend it all day.
The vibe-coding wave is mostly generating apps on a stack I moved away from. The AI got new. The output didn’t. Leanfinit builds on Flutter — that’s what got my attention first.
Why Leanfinit is the Replit alternative I’d pick
If you have an idea for a tool — for your business or just for your own life — and you want to see it working today, don’t start by paying for an agent’s trial and error. Start free. See if the idea holds. Iterate without paying for every attempt.
That’s why I’d start with Leanfinit. It’s free right now, it’s built on the stack I’d choose for my own apps, and if 95% of ideas are going to fail anyway, yours should at least fail for free — and the 5% that work should get to launch.
I still miss writing code sometimes. But I don’t miss paying for every attempt if a cool free tool exists.
