Web app or SaaS · Free

Best AI builder for a web app or SaaS on a free plan

Ranked for a beginner who can follow a change, then split by where they want to work. The same weights run the homepage quiz.

For someone who can follow a change, the browser pick is Bolt.new on Free and the editor pick is Google Antigravity on Individual.

Best fit

A browser builder with a generous free token pool and a $25 Pro plan.

fit / 100

Start on Free · Free Verified

A practical way to get a web app on screen before you commit to an editor.
1 million tokens per month and a 300,000 token daily cap. Public and private projects, Bolt branding, and a 10MB upload limit. Direct edits in Code view do not spend tokens.
A good middle: generate in the browser, then hand-edit in Code view without spending tokens.
This is a browser builder, which is the preference you picked.

Also consider · 2

A browser builder for web apps, with a hard monthly cap on the free plan.

fit / 100

Start on Free · Free Verified

This is what Lovable is for: describe a web app, get a hosted project, then pay when the free credits run out.
5 build credits a day, capped at 30 per calendar month, plus 20 Cloud credits, 4 AI credits, and 1 connector credit. You cannot edit or download the code, or attach a custom domain, until Pro.
You can stay in the browser, then export code on Pro when you want to leave.
The whole product is a browser builder.

Best fit

A free agent IDE, with higher quotas on Google AI Pro and Ultra.

fit / 100

Start on Individual · Free Verified

A credible free way to have an agent edit a web app repo. Hosting is still yours to sort out.
Free. Unlimited Tab completions and Command requests, Gemini models, and a weekly agent quota. The quota is not a published prompt count. It refreshes weekly, not every five hours.
A practical free editor if you can follow the agent's changes.
It matches an editor preference, and the free tier is actually usable.

Also consider · 2

A coding agent you can run free on your own machine, or in Amp's cloud.

fit / 100

Start on Hobby · Free Verified

A strong agent for a web app repo, including parallel cloud machines. Hosting the product for your users is still separate.
Free to Amp if you bring your own model subscription or key and run on your own machine. Cloud orbs are pay-as-you-go. Hobby includes no orb minutes and no Amp credits.
A good step if you can follow a thread and you already have a model subscription to attach.
The CLI, the web app, and the Mac app are where the work happens. It is an agent environment, not a VS Code-style editor you live in all day.

If you do not want to read code

The order changes. Editor tools drop, even when they are famous.

Editor and CLI tools move up. Browser builders stay useful for a first UI pass.