Block VI · Coding with agents · Lesson 28
Vibe coding: build an app without knowing how to code
You'll see how to go from an idea to a working prototype with Lovable, Bolt, v0 and Replit, and what to check before taking it to production to avoid security and cost scares.
- 10 min
- 9 animated slides
- 4-question quiz
- Narrated in 6 languages
What you'll see in this lesson
- Vibe coding: describe the app and AI builds it
You explain what you want in your own words, the tool writes all the code, and you test it and ask for changes.
- Lovable, Bolt, v0 and Replit: what each one does best
All four turn a description into a working app, but each has its own strength.
- From idea to prototype in one afternoon
Start with a short, clear brief, build the bare minimum and improve it with small changes, one after another.
- What they cost: entry plans in October 2026
Paid plans start between 20 and 30 dollars a month; free ones are for trying things out, not for finishing a project.
- Credits, tokens and effort: where the money goes
Each platform measures in its own way, but on all of them messages that trigger a lot of work cost more.
- The big scare: exposed keys and open data
Anything that runs in the browser can be read by anyone: keys and data access rules belong on the server.
- Checklist before going to production
Five areas to check one by one: keys, authentication, database, costs and backups.
- When to make the jump to a coding agent
As the project grows, so do the bill and the fragility: it's time to move the code to your own repository.
- Summary: from prototype to production without scares
Vibe coding to get there fast; security and cost discipline before opening it to the public.
Tools and concepts
- Lovable
- Bolt
- v0
- Replit
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