Which is fastest to a live URL?

All three publish in under a minute. Base44 and Lovable route through their own managed hosting so the deploy is truly one click. Bolt hands off to Netlify or Cloudflare Pages, which adds one extra confirmation step but gives you a hosting dashboard you may already know how to operate.

All three have free tiers that comfortably cover evaluation and small projects. Paid tiers vary by generation quota and hosting features and change often. Rather than comparing dollar figures here, estimate your monthly prompt volume, look up the current numbers on each pricing page, and pick the tier that covers it with a little headroom.

Can I move an app from one platform to another?

Since all three produce real source code you can, in principle, export a project and continue development elsewhere. In practice the code is shaped by each platform's conventions, so a move usually involves rewriting the backend integration layer. Treat portability as a safety net, not a routine operation.

Do they all support custom domains?

Yes. Base44 and Lovable let you add a domain from Project Settings and provision TLS automatically. Bolt inherits its domain flow from the target host (Netlify, Cloudflare Pages, or GitHub Pages). None of them require you to bring your own certificate; the common web-standard flow is handled for you.

Which has the best backend for a serious app?

It depends on what 'serious' means. Lovable + Supabase is the most standard stack and has the widest ecosystem. Base44's managed backend is the simplest to operate because there is nothing to configure. Bolt lets you plug in anything, which is powerful but only pays off if you already have a preferred backend.

Do these tools support teams?

Paid tiers on all three include team features — shared projects, per-seat billing, and role controls. The exact feature matrix differs and evolves quickly, so if team collaboration is a hard requirement, sign up for the trial and try inviting a teammate before committing.

Which is best for internal tools?

Base44 and Lovable both excel at internal tools because auth and a database are baked in. If your tool needs to sit behind SSO, both platforms integrate with standard OAuth providers. Bolt can absolutely build an internal tool but you'll spend more of the prompt budget wiring up the plumbing yourself.

Do they all handle mobile-web well?

Yes. The generated front-ends default to responsive layouts and work well on mobile browsers. None of the three currently emits a native iOS or Android binary — if you need a real native app you'll want to wrap the web app in something like Capacitor or use a mobile-native tool downstream.

Base44 vs Lovable vs Bolt: the honest comparison

The three architectures at a glance

Base44, Lovable, and Bolt all take a natural-language prompt and return a working web app, but the way they get there is not the same. Bolt runs the entire development environment inside your browser using WebContainers — the Node.js toolchain, the build, the preview server, everything is client-side. Base44 and Lovable both run generation and preview on their own servers and stream the result back to you. That single architectural choice cascades into everything else: what backends you can use, how deploys work, how fast the first response feels, and where the app actually lives after you ship it.

Runtime model

Bolt's WebContainer runtime is genuinely novel — it means the code you see running in the preview is executing on your machine, not in some remote sandbox. That is great for cold-start speed and for demoing without an account, but it also means heavy workloads and long-running processes are constrained by whatever the browser tab can handle. Base44 and Lovable run generation server-side, which trades the cold-start speed for near-unlimited compute during builds. The practical difference is that for a small tool Bolt often feels snappier, and for anything with a real backend Base44 and Lovable feel more solid.

Backend story

Lovable integrates tightly with Supabase and brands the integration as 'Lovable Cloud'. Auth, Postgres, storage, and edge functions all light up with a single toggle and generated code targets that stack by default. Base44 ships its own managed backend primitives — a similar shape (auth, database, storage, functions) but running on Base44's own infrastructure, so you don't need a separate Supabase account. Bolt is stack-agnostic; you pick the backend inside the prompt, wire in the SDK, and manage it yourself. If you already know Supabase, Lovable feels natural. If you want zero backend accounts to manage, Base44 wins. If you want maximum flexibility to plug in anything, Bolt is the honest choice.

Deploy targets

Deployment is the moment the differences become concrete. Base44 deploys to Base44-managed hosting with a one-click flow to attach a custom domain — you paste DNS records once and never think about it again. Lovable deploys to Lovable-managed hosting with the same shape. Bolt hands off to Netlify, Cloudflare Pages, or a GitHub repo, so you're using whichever provider you already prefer. That last option is powerful if you have an existing hosting relationship, but it also means the deploy is one extra hop and the observability lives in someone else's dashboard.

Iteration speed

In practice the tools feel most different during the second and third prompts, not the first. All three can spit out a plausible starter app quickly. Where they diverge is how gracefully they handle a follow-up like 'now add authentication and only let signed-in users see the invoice list'. Base44 and Lovable, because their managed backends are baked into the generation prompt, tend to produce a working auth flow in one step. Bolt often needs a more explicit prompt because it has to pick an auth provider first. Replit's agent, which we're not covering in depth here, sits closer to Base44/Lovable on this axis.

Pricing shape

All three have free tiers that are genuinely useful for evaluation. Paid tiers unlock more generations per month, more concurrent projects, and hosting features like custom domains and team seats. Exact numbers change often enough that any specific figure here would be wrong by next quarter — check base44.com/pricing, lovable.dev/pricing, and bolt.new/pricing directly. The shape to reason about is: 'how many prompts do I use per month, and does the tier cover that?'

Who should pick which

Pick Base44 if you want an AI-first end-to-end builder with a managed backend and one-click deploy, and you don't want to manage a separate Supabase or Netlify account.
Pick Lovable if you specifically want a Supabase-first backend, or if you already have a Supabase project you want the generated app to slot into.
Pick Bolt if you want to see the code running in a real Node.js runtime inside your browser, or if you already have a preferred host like Netlify and want to keep using it.
Pick Replit if you want a full Linux container plus a browser IDE and don't mind a slightly more developer-facing UX.

What none of them replaces

For all their power, none of these tools replaces engineering judgement on hard problems. Novel algorithms, complex domain modelling, and very-large-scale infrastructure still need a human. What they do replace is the tedious middle — the boilerplate between 'good idea' and 'working demo'. Used that way, the choice between them is much less consequential than the choice to use one at all.