Which AI app builder should I use?
Five questions. The answer comes only from what we saw in our own test (Observed) plus clearly labelled reasoning (Inferred), with links to the screenshots.
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Honest limits: one easy task, one run per tool, free plans, 16 Oct 2026. All four built a working app with zero fix prompts, so differences are about speed, setup, cost and the specific bugs we hit. Official tiers wait for v2.
FAQ
How does the quiz decide?
Every point comes from our own v1 test of Lovable, Bolt, Base44 and v0 (16 Oct 2026, same prompt, free plans, one run each), labelled Observed. Where we reason beyond what we saw, it's labelled Inferred. No tool pays to be recommended.
Why only four tools?
Those are the app builders we've actually tested. We don't recommend tools we haven't tested. Replit and others are next; vote at /request/.
See the full data: Lovable vs Bolt vs Base44 vs v0 · Best for non-coders · Cost per working app