Build your first app with Lovable: a step-by-step guide for first-time builders in the AI Builder Challenge 2026, from a plain-language first prompt to a tested AI app at a public lovable.app link, with no code and no API key.
A step-by-step guide for first-time builders in the AI Builder Challenge 2026: build a small AI app in Lovable without code, add AI without an API key, test it and publish it at a public link.
Build your first app with Lovable: a step-by-step guide for AI Builder Challenge 2026 participants who have never coded. Lovable builds the app from plain-language prompts in the browser, its built-in AI needs no API key, and its Publish button gives a public lovable.app link anyone can open without an account. The free plan is enough for the practice project.
Plan before you build: Chat mode answers questions without changing the app, Plan mode writes a plan you approve, and Build mode makes the change. Build the Zephnote practice helper in four small steps: the page, standing rules in Knowledge, the real AI in a backend function, and friendly errors with limits.
Make credits last: copy prompts instead of drafting in Lovable, plan bigger steps and build one step per message. The AI inside a published app is paid from the same workspace, so keep a reserve through peer review and the Showcase.
Test the six practice tests with browser testing, publish, and retest the public address in a private window. The guide ends with a recovery table, a safety checklist, advice from other Lovable builders grouped by the judging criteria, and official Lovable resources.