Short answer: Bolt.new if you want an in-browser full-stack prototype you can poke, export, and keep iterating without a local setup. Lovable if the job is a designed, shareable product surface — landing-to-app with less "developer IDE" feel. Neither replaces a real codebase for production. Build the same one-evening app in both before you pay. If the job is UI-from-prompt into a Next.js repo, see v0 vs Lovable.
The one-evening build test
- Pick a real tiny product: a waitlist with a dashboard, a CRUD admin, a personal tracker. Same spec in both.
- Time-to-first-working-URL. Score how much you had to fight the tool.
- Change one real thing (a field, a style, an auth rule). Score whether the second pass held together.
- Export / Git / ownership: could you leave with the code? Price the paid tier you would actually need on Pricing Watch.
Where each one wins
Bolt.new
- In-browser full-stack: closer to "an IDE that runs" than a design canvas.
- Better when you will keep editing code the tool wrote.
- The right default if you already think in components and want the prototype to become a repo.
Lovable
- Faster to a designed, shareable surface — the "show someone a URL tonight" path.
- Less IDE, more product: good when the audience is a founder, not a staff engineer.
- Pairs with the v0 conversation: Lovable for the whole app story, v0 when the job is UI into an existing Next.js tree.
Overlap warning
Bolt, Lovable, and v0 all sell "ship an app with prompts." Paying for two is usually overlap. Pick the surface you will live in (browser IDE vs designed product vs UI-into-repo) and cut the others. For Bolt vs v0 specifically, use the v0 vs Bolt.new table after this test, not instead of it.
Decision summary
Pick Bolt.new if you want to keep the code. Pick Lovable if you want a designed URL tonight. Pick neither paid until the one-evening app actually runs — free/trial credits exist to answer that. Production still needs you to own auth, data, and the bill.
Frequently asked questions
Can these replace a developer?
For a prototype, they can replace a blank repo. For production — auth, data, abuse, billing — you still need someone who can read the code. Treat the output as a first draft.
Which is cheaper for a weekend project?
Credit and seat models differ. Build the app first, then price the tier you actually hit on Pricing Watch.
Related: Bolt.new vs Lovable comparison · Bolt.new review · Lovable review · Keep/Cut Weekly