Best AI app builders

Lovable turns a written description into a working application and keeps it running on its own infrastructure. There is no hosting account to open, no repository to configure and no deployment step to learn: the product registers the domain, writes the DNS records and issues the certificate. For someone who can read code but does not want to operate a server, that removes most of the work between an idea and something a customer can open.

The editor is a conversation. Adjusting a page means describing the change rather than moving anything, and the documentation teaches that vocabulary rather than a layout model. What comes back is competent and generic, which suits a tool where the output is meant to work rather than to look distinctive.

The catch is the meter. A paid plan buys a monthly allowance of credits, and a complicated build consumes them faster than a simple one, so the advertised figure is a floor rather than a total. Buying more mid-project is normal, which makes the running cost genuinely hard to predict before starting.

Bolt.new writes an application from a description and runs it on the vendor's own hosting. The documentation states outright that no third-party hosting account is required, which is the single practical difference between this and the tools that hand deployment somewhere else. A domain can be bought inside the product; attaching one already owned means editing registrar DNS by hand.

Everything happens in the browser, and the application is visible while it is being assembled rather than after a build step. For a reader who wants working software at a public address quickly, and who can read what came back, that is a short path.

The catch is an allowance measured in tokens rather than time, where the ceiling matters more than the headline. Reloads are documented as available only on the highest individual monthly tier or on any annual plan, so on the base monthly plan running out is answered by upgrading rather than topping up. Below the enterprise tier there is no support channel beyond a help centre.

Base44 asks for a description in plain language, states that no coding experience is needed, and publishes to a working address before any domain decision has to be made. That ordering matters: the application exists and can be shown to someone before there is a registrar, a DNS record or a bill involved.

Custom domains are documented from the cheapest paid tier, which is unusual in this category. A free domain for the first year sits higher up and applies only to yearly billing, so the homepage's shorter claim compresses two different offers into one phrase.

The catch is the badge. The vendor's documentation lists removal among the entry tier's highlights, its own pricing page omits it, and a third-party guide places it two tiers higher. If the third-party reading is right the qualifying plan costs more than double and the starting price sits in a different band entirely. The company was acquired in 2025 and is still sold on its own terms, which is why it appears here separately.

v0 generates interface code rather than a site, and it does that unusually well: the output uses a real component library, a documented design system and conventions a developer would recognise. Someone comfortable in a codebase can move from a description to a working screen quickly, and take the result away as a repository.

Publishing is where it diverges from everything around it. The vendor's own instructions hand deployment to a separate hosting service, send the reader to that service's console and then to their registrar's DNS. That hosting service documents its free tier as non-commercial, so a business publishing a v0 project needs a paid plan there as well as the plan here.

The cost is a price that misleads rather than merely understates. The cheapest plan a new customer can buy is thirty dollars a month per person, the tier below it has been withdrawn, credits are consumed daily on top, and the hosting bill sits outside all of it. No support channel is named below the enterprise tier.

Replit was a development environment before it was an AI builder, and that history is the reason to choose it. What the generator produces is not a preview but a real project: a workspace with a database behind it, collaborator seats, and a published address that can carry a domain. For an application that will keep being worked on, the ceiling is much higher than a tool that only regenerates from prompts.

Getting started needs no code, and the vendor says the first prompt costs nothing. The decisions immediately after that are about deployment, and they are framed in the vocabulary of someone who deploys things.

The cost is three separate meters running at once — agent credits, publishing compute and requests, and the production database — and the documentation describes applications being suspended if payment fails. Removing the vendor badge sets the qualifying tier rather than the domain does, and the only named support tier sits above the plan this reader would buy.