Choosing where to build: Replit vs. Lovable vs. Base44 vs. Bolt vs. v0

A new kind of tool lets you describe an app in plain language and get a working version back: screens, a database, sign-in, and hosting. Replit, Lovable, Base44, Bolt, and v0 are the best known. They are often called "vibe coding" tools, and they are genuinely useful for prototypes, internal tools, and simple customer-facing apps.

They are not interchangeable, though. They differ in who they are built for, how much of the code you can see and keep, and what happens when your app outgrows them. This guide helps you pick, and tells you when to move on to your own code.

What these tools actually do

Each one combines several layers that used to take a developer to set up. The difference between them is mostly how many of those layers they handle for you, and how much they let you see.

Five questions that decide it

1. Who will maintain this? A non-technical owner needs the most guided tool. A team with a developer can use one that exposes more code.
2. Does it need a database and logins? Simple sites do not. Anything with accounts, records, or private data does, and that is where tools differ most.
3. Do you need to own the code? If the app might move to another host, or a developer might take it over, choose a tool that syncs to GitHub.
4. How will costs behave as you use it more? Most of these tools charge in credits or tokens that are spent per change, which can be hard to predict during heavy building.
5. How custom is the design? Some tools produce clean but similar-looking interfaces. Unusual designs usually need more hands-on editing.

The tools, one by one

Replit

A browser-based development environment with an AI agent that plans, builds, tests, and fixes its own work. It includes a built-in database, sign-in, and real hosting, and it supports many programming languages, not only web apps.

• Strengths: the most complete environment of the group; you can see and edit all the code; production-grade hosting.
• Watch for: the agent can work for a long time on one request, which uses credits; the full code view can feel like a lot for non-technical users.
• Best for: technically curious owners and teams who want one place to build, run, and host.

Lovable

A guided builder that generates modern web apps (React and TypeScript) from a conversation. It handles the database and sign-in through its own cloud service or a connection to Supabase, and it can sync your code to GitHub.

• Strengths: fast, polished results with the least setup; code you can take with you through GitHub.
• Watch for: credits spent on fixing the tool's own mistakes; check database access rules before launch (see the security note below).
• Best for: non-technical founders and teams building web apps and internal tools.

Base44

An all-in-one platform where your app runs entirely on Base44's own infrastructure, with no separate backend to set up. Base44 was acquired by Wix in 2025.

• Strengths: the simplest start; one bill; a planning mode that discusses the app before building it.
• Watch for: limited code export, so moving away later is harder; you depend on the platform's uptime.
• Best for: simple internal tools you do not plan to move elsewhere.

Bolt

A builder from StackBlitz that runs a full development environment inside your browser. It offers its own hosted backend or a Supabase connection, and it can target mobile apps as well as websites.

• Strengths: a very fast prompt-to-prototype loop; design-file import; mobile support.
• Watch for: token usage that is hard to predict; interfaces that can look generic without extra direction.
• Best for: quick prototypes and builders who want mobile from the start.

v0

Vercel's builder. It began as a tool for generating interface components and has grown into a full environment with version control and one-click deployment to Vercel. It connects to databases such as Supabase and Neon.

• Strengths: clean, modern interfaces; real Git version control; publishing creates a full Vercel project.
• Watch for: it leans toward developers and the Vercel ecosystem; you may set up the database account yourself.
• Best for: teams already on Vercel, with at least one person comfortable reading code.

Side by side

A quick way to choose

Before you launch: the security check

These tools make it easy to ship a working app before anyone has checked who can read its data. There have been public reports of apps built this way exposing user records because database access rules were left open.

When to move to your own code

App builders are a great start and, for many tools, a fine finish. Move the project into your own repository when:

• A developer needs to work on it alongside the tool's AI.
• You need a host, database, or integration the tool does not support.
• Monthly credit costs for small changes exceed what a developer would cost.
• The app has become important enough that you want full control over backups, testing, and releases.

If your tool syncs to GitHub, moving is mostly a matter of connecting that repository to a host. See how to launch your first project with GitHub and Vercel. AI coding assistants such as Claude Code and Cursor work directly in that repository, so you keep the speed without the lock-in.

Common questions

Can I build my whole business system in one of these?

You can build parts of it: a portal, an intake app, an internal dashboard. Your CRM, accounting, and email platforms are usually better left as the proven tools they are, with your custom app connected to them.

Are the apps they build "real" code?

Yes, for most of them. Replit, Lovable, Bolt, and v0 generate standard web code you can read and, with GitHub sync, keep. Base44 is the most closed of the five.

Which one is cheapest?

It depends on how you build. Credit and token plans reward clear, well-planned prompts. Asking for many small changes, or letting an agent loop on a bug, uses more.