Google AI Studio
Google's free, hosted prompt-to-app builder, if a Gemini-only tool and Google's free-tier terms suit you.
If what you value in Lovable is that someone else runs everything, Build mode in Google AI Studio is the closest hosted option at no cost. It turns a prompt into a full-stack web app (a React front end and a Node.js server by default) or a native Android app in Kotlin and Jetpack Compose, with a live preview in the browser, and it can provision Firebase Firestore and Firebase Authentication, sync two ways with GitHub, export a ZIP, and deploy to Cloud Run. Google's billing page says AI Studio usage is free of charge unless you link a paid API key. The trade-offs: it is built around Google's Gemini models, and on the free tier Google's terms say your prompts and outputs may be used to improve its products and may be read by human reviewers.
What it does well
- +No subscription and no credits to budget: free in the browser unless you link a paid key
- +Full-stack by default (React plus a Node.js server), and native Android apps as well
- +Two-way GitHub sync and ZIP export; a downloaded app runs on any host once you set GEMINI_API_KEY
- +Firebase Firestore and Google sign-in can be provisioned for you
Where it falls short
- −Built around Gemini; Google's Build mode guide describes no other model provider
- −On the free tier Google may use your prompts and outputs to improve its products, human reviewers may read them, and its terms say not to submit sensitive or confidential information
- −Firebase rather than Supabase, so a Lovable app's backend does not carry across directly
- −A hosted Google service you cannot self-host; deploying from AI Studio means Cloud Run, billed by usage
Google AI Studio as an alternative to
Where Google AI Studio shows up in our comparisons, and how it ranked.
Google AI Studio head-to-head
Straight comparisons against the tools people weigh it against.