Best AI app builder: 6 builders on one brief
The pages ranking for this question each put their own product first and call the list tested. This one gives six builders the same brief, an email opt-in page with stored, duplicate-safe sign-ups, and answers it from each vendor's own documentation, read on 23 October 2026. One builder was run and measured: Lovable, 1.8 credits. The other five are priced and described, never ranked.
Find your builder
Four questions, your top three
Your shortlist
Lovable
You do not code, you want auth and a database without setting them up, and you want to pay per message with unlimited members instead of per seat.
Browse the measured prompts →Bolt.new
You want the closest substitute to Lovable and prefer a token meter with 10M tokens a month on Pro and no daily cap.
Lovable vs Bolt →Base44
You are building an internal or CRUD tool and want the backend fully managed, from $16 a month billed annually, checked on 23 October 2026.
Base44 alternatives →Scored from the facts in the table below. Lovable gets no bonus points.
The category question comes first
Six builders, three kinds of tool
Prompt-to-app builders
Lovable · Bolt.new · v0 · Base44
Describe the app, get a running app with hosting. Four of the six, and the true substitutes for each other.
Cloud IDE with an agent
Replit
Agent speed plus a shell, a repo and a database, on a paid plan. Built for people who read code.
Visual no-code
Bubble
Drag and drop, fully hosted, no code export at any price.
Two consequences follow. Bubble is a one-way choice, because its manual says there is no way to export the application as code. And Replit is the only one of the six without a free plan on its pricing page, so the free test this page recommends starts with the other five.
Side by side
The six, sortable
Showing all 6 tools
| Tool | Free tier | Entry paid | You pay by | Keep the code | Backend | Best for | Read |
|---|---|---|---|---|---|---|---|
| Base44Prompt-to-app, managed backend | 25 message and 100 integration credits a month | $16/mo (annual) | Message credits plus integration credits | GitHub listed on Builder ($40) and up; one branch named main | Yes, managed: entities, functions, login | Non-technical founders building internal or CRUD apps | 23 October 2026 |
| ReplitCloud IDE with an agent | No free plan listed; a Free Mode inside Core and Pro | $20/mo ($18 annual) | Effort-based dollars, pay as you go | Yes: two-way GitHub sync from the Git pane | Yes, built-in database, storage and hosting | Developers who want agent speed plus a shell and a repo | 23 October 2026 |
| LovablePrompt-to-app builder | 5 build credits a day, up to 30 a month | €25/mo | Credits per message | Yes: two-way GitHub and GitLab sync, one branch at a time | Yes: built-in backend with database, auth, storage and functions | Non-technical founders who want a full-stack app from prompts | 22 October 2026 |
| Bolt.newPrompt-to-app builder | 1M tokens a month, 300K daily cap | $25/mo ($18 annual) | Tokens | Yes: two-way GitHub sync, imports an existing repo; ZIP download | Yes, including databases and hosting | Non-technical founders who want a full-stack prototype and a clean way out | 23 October 2026 |
| v0Prompt-to-app in the Vercel pipeline | $5 one-time credit, 7 messages a day | $30/user/mo | Prepaid credits, token-metered per model | Yes: opens pull requests on your repo | Yes; Vercel's docs say it builds backend logic | Developers and teams on Next.js and Vercel | 23 October 2026 |
| BubbleVisual no-code | Free, 50K workload units a month, for apps under construction | $59/mo (annual) | Workload units across 12 activity types | No: apps run only on Bubble | Yes, fully proprietary | Non-technical teams who never plan to leave | 23 October 2026 |
The last column is the date we checked on each vendor's page. Base44 and Bubble prices are annual billing; Bolt's $25 monthly figure is the billing docs' example beside the $18 annual card. Lovable is shown in euros as displayed to EU visitors.
One brief, six answers
An email opt-in page with stored, duplicate-safe sign-ups
The brief is the cheapest build in our library and the one most products need first: a public page, a form, a table the sign-ups go into, and no duplicates. Each cell is what the vendor's documentation says it would use, with the one measured run marked.
| Where the sign-ups are stored | Public page on the free plan | The code afterwards | What we measured | |
|---|---|---|---|---|
| Lovable | Lovable Cloud database, on Supabase's foundation, on every plan | Free prints 5 lovable.app domains and invite-only publishing; custom domains from Pro (read 22 October 2026) | Two-way GitHub sync, one branch at a time | 1.8 credits, one round, all five priority features, 31 July 2026 |
| Bolt.new | A Bolt database on every project by default; Supabase on Pro and Teams | A .bolt.host domain with 10 GB and 333,333 requests a month, Made in Bolt badge | Two-way GitHub sync and a ZIP download | Not run |
| v0 | Upstash, Neon, Supabase or Vercel Blob, provisioned from a marketplace | Deploys to Vercel; 7 messages a day on Free | A working branch and a pull request on your repository | Not run |
| Base44 | Entities on the managed backend | Up to 5 apps on Free with 25 message credits a month; a connected domain from Starter | GitHub two-way sync from Builder at $40, a branch named main | Not run |
| Replit | A managed PostgreSQL per app, 20 GB free storage | No free plan listed; Autoscale or Static deployment on Core | Two-way GitHub from the Git pane | Not run |
| Bubble | Bubble's own database | Free plan for apps under construction, 50K workload units a month | None: apps run only on Bubble | Not run |
Lovable's cells from its pricing page on 22 October 2026 and its run on 31 July 2026; Bolt from its database and hosting docs on 23 October 2026; v0 from its databases, deployments and GitHub docs (26 September and 23 October 2026); Base44 from its pricing page and GitHub docs; Replit from its database and deployments docs on 23 October 2026; Bubble from its pricing page and manual.
Each tool
Choose it if, skip it if, and the record
Bolt.new
$25/mo ($18 annual) · TokensChoose it if
You want the closest substitute to Lovable and prefer a token meter with 10M tokens a month on Pro and no daily cap.
Skip it if
Your codebase will grow: Bolt's token docs say tokens are consumed by reading, understanding and syncing your project files, so a one-line change to a big project is not a cheap request.
On the record
No major incident in our sources. Its Git docs, read 23 October 2026, describe two-way sync and repo import; Open in StackBlitz is gone for projects on the new storage format since April 2026. Paid tokens roll over for two months. Bolt token documentation
- Bolt.new
- Choose it if: You want the closest substitute to Lovable and prefer a token meter with 10M tokens a month on Pro and no daily cap. Skip it if: Your codebase will grow: Bolt's token docs say tokens are consumed by reading, understanding and syncing your project files, so a one-line change to a big project is not a cheap request. On the record: No major incident in our sources. Its Git docs, read 23 October 2026, describe two-way sync and repo import; Open in StackBlitz is gone for projects on the new storage format since April 2026. Paid tokens roll over for two months. Source: bolt.new/pricing read 23 October 2026 (Pro $18 and Teams $27 per member billed annually, $25 and $30 monthly); token docs read 26 September 2026
- v0
- Choose it if: Your team ships Next.js on Vercel and wants AI changes as pull requests against your own repo, reviewed as a diff. Skip it if: You want to finish something on the free tier: 7 messages a day is the weakest allowance here, and unused credits expire after 65 days. On the record: The $20 Premium plan is being sunsetted and is closed to new users, so Plus at $30 per user is the entry paid price. Monthly credits roll over and expire after 65 days. Source: v0.app/docs/pricing read 23 October 2026
- Replit
- Choose it if: You read code and want an agent, a terminal and a database in one place, with Core at $20 including $20 toward stronger models, checked on 23 October 2026. Skip it if: You want a free plan, or predictable costs: the plan floor is Core at $20 and the billing docs say Plan Mode can bill for reasoning even when it changes no code, read 23 October 2026. On the record: July 2025: the agent deleted a customer's production database during an active code freeze, generated fabricated data and reported a rollback impossible. Replit's CEO called it a catastrophic error of judgement. Source: replit.com/pricing read 23 October 2026 (Core $20, $18 annual; Pro $100, $90 annual); Fortune for the record
- Base44
- Choose it if: You are building an internal or CRUD tool and want the backend fully managed, from $16 a month billed annually, checked on 23 October 2026. Skip it if: Keeping the code matters: per its GitHub docs, sync needs Builder or higher, the branch must be named main, you cannot revert to pre-sync versions and cannot reconnect the same repository. On the record: Owned by Wix since mid-2025. Prices moved between July and September 2026 and held on 23 October 2026; monthly-billed prices did not render, so only annual figures are printed. Source: base44.com/pricing read 23 October 2026 (Starter $16, Builder $40, Pro $80, Elite $160, billed annually); GitHub docs read 26 September 2026
- Bubble
- Choose it if: You want visual control over every element, a mature plugin ecosystem, and you accept staying on Bubble for good. Skip it if: You may ever want to leave: Bubble's manual says apps run only on Bubble and there is no way to export the application as code. On the record: With overages off, the manual says exceeding the plan's workload takes the app offline until the next billing period (read 26 September 2026). The pricing page on 23 October 2026 confirms overages can be turned off and says nothing about the limit behaviour. Source: bubble.io/pricing read 23 October 2026 (Starter $59, Growth $209, Team $549, billed annually); manual read 26 September 2026
Pick Lovable if and pick another builder if
Lovable
Pick Lovable if
- You will not open the code and want a database, auth and hosting from the Free plan
- Two or more people build: unlimited collaborators on every plan
- You want to know what a prompt costs before you pay: 0.50 to 2.00 credit examples, 1.8 to 10.4 measured
- You want two-way GitHub sync as the exit door and you start fresh
Another builder
Pick another builder if
- You already have a repository: Bolt, v0 or Replit import it, Lovable cannot
- Your team ships Next.js on Vercel and reviews pull requests (v0)
- You want a shell beside the agent (Replit)
- You want the most managed backend at the lowest annual price and never plan to leave (Base44, Bubble)
- Your security posture is audited and the project would be on Lovable before November 2025
The public record is the row no vendor page prints. Lovable carries CVE-2025-48757, insufficient row-level security in generated projects, and an authorisation flaw in its own API disclosed in April 2026 that let a free account read another user's source and database credentials; reporting says it was patched for new projects and not remediated for projects created before November 2025. Replit carries the July 2025 production-database deletion. Reporting by The Next Web, SC Media, Fortune. The security guide has the scans we ran on our own project.
That run is the scale for every entry price above: a capture page with stored, duplicate-safe sign-ups cost 1.8 of the 5 build credits Lovable gives a free account each day. The other five builders have no equivalent figure here because we did not run them. The prompt page has the builder and the screenshots, and the pricing guide turns every run into builds per plan.
The left column describes you?
Start on the Free plan: 5 build credits a day, no card. Our cheapest measured build, landing page + email opt-in, cost 1.8 credits in one round.
How we compared, and what we did not publish
- Prices and limits from each vendor's own pricing page and docs, re-read 23 October 2026; the read date sits on every row.
- The brief is answered from documentation for five builders and from a measured run for one, marked as such in the matrix.
- Incidents only when reported by named publications, with dates.
- No ranking. Six builders, one measured; a number one would be a guess dressed as a result.
Not published
- The same brief run on all six. It needs paid accounts on each, and we hold one.
- Builders whose pages we did not read on the date printed: Emergent, Manus, Softr, Glide, FlutterFlow, Rork, Jotform, Choicely.
- Speed claims. We did not time the run; the credits page records credits, not minutes.
- Bolt's monthly-billed prices and Pro tier token amounts, Base44 and Bubble monthly prices, Replit deployment rates: the vendors did not render them.
What changed
- 23 Oct 2026Rebuilt on the list-comparison template with the one-brief matrix. Bolt, Replit, v0, Base44 and Bubble re-read; Bolt's Git docs now describe two-way sync and repo import; Cursor left the list because it builds no app.
- 26 Sep 2026First published with six builders priced on the day and three Lovable runs.
Frequently asked
What is the best AI app builder in 2026?
There is no single answer, and the pages that give one are selling it. On the brief this page uses, Lovable was the only builder we ran: 1.8 credits for the page with stored sign-ups, 31 July 2026. By documentation: Bolt.new for a token meter and a ZIP as well as GitHub; v0 for pull requests into a Vercel project; Base44 for the most managed backend at $16 a month billed annually, with GitHub only from its $40 plan; Replit for a workspace with a shell; Bubble for visual editing with no code out. Prices read 23 October 2026.
Which AI app builder did you test?
Lovable, three times, with prompts from this site's library in our own workspace: a landing page with email capture at 1.8 credits, an empty-and-loading-states system at 9.5, a SaaS foundation with auth and roles at 10.4, credits read from the workspace page before and after. The other five are described from their vendor pages and documentation on the dates printed, and nothing here ranks their output.
Which AI app builders are free?
All six list a free tier except Replit, which on 23 October 2026 listed no free plan, only Free Mode inside Core and Pro. Lovable gives 5 build credits a day; Bolt 1M tokens a month with a 300K daily cap; v0 7 messages a day; Base44 25 message credits a month; Bubble a free plan for apps under construction. Each is enough to run one prompt and read the meter before paying.
Which builder gives you the code?
Lovable, Bolt and Replit sync two ways with GitHub, and Bolt also downloads a ZIP; v0 pushes to a working branch and opens pull requests; Base44 syncs from the Builder plan to a branch named main, with the docs' warning that pre-connection history cannot be reverted to; Bubble gives no code at any price.
How much does an app cost to build on one of these?
On Lovable, our measured runs: 1.8 credits for a capture page, 9.5 for a states system, 10.4 for a SaaS foundation, so a 100-credit month at €25 (read 22 October 2026) covers a product and a few dozen changes. Bolt bills tokens, v0 dollar credits per user, Base44 message credits, Replit effort per checkpoint, Bubble workload units; none prints a per-prompt price before you send it.
Why not include Emergent, Manus, Softr or Glide?
Because we did not read their pricing pages or documentation on the date printed, and the roundups that rank them are written by one of them or by an affiliate. This page lists the six builders whose prices and mechanics we verified, and says which one we ran.
Sources, with the date each was read
- lovable.dev/pricing 22 October 2026
- Lovable credits and usage 23 October 2026
- bolt.new/pricing 23 October 2026
- Bolt database and hosting docs 23 October 2026
- v0 pricing docs 23 October 2026
- v0 databases and GitHub docs 26 September and 23 October 2026
- base44.com/pricing and GitHub docs 23 October 2026
- replit.com/pricing 23 October 2026
- Replit database docs 23 October 2026
- bubble.io/pricing and the Bubble manual 23 October 2026
- The Next Web and SC Media on Lovable's record 26 September 2026
- Fortune on the Replit incident 26 September 2026
The other comparison pages
Written by
Marco Kohns
Founder of ProtoBites - Venture Growth Studio
Growth PM at a Silicon Valley scale-up (a16z and General Catalyst backed), ex-Techstars where he consulted 13 early-stage startups, Reforge-trained. Every prompt on this site comes out of shipping ProtoBites' own portfolio products.
Related reading
- Lovable alternatives compared · The same six, from the other side.
- Base44 alternatives by what you keep · Its GitHub rules quoted in full.
- three prompts and what they built · Every screenshot from the runs.
- Lovable pricing, read today · Plans and the credit ladder.
- vibe coding prompts · Ten prompts to run on a free tier.
- product-channel fit · Which surface the builder has to ship.
- from idea to app, measured · The path from brief to first users, measured.
- the prompt library · 131 prompts, each tied to a channel.
- Lovable security · The security record behind the RLS row in the table.
- Lovable and Stripe, in the SaaS guide · How Lovable takes payments, from the docs.
- Lovable mobile app · Native or not: Lovable's documented mobile paths.
- Lovable vs v0 · v0's repo import against Lovable's export-only sync.
- app ideas · What to build once you have picked the builder.
- SaaS ideas · What to build once the builder is picked: fifteen SaaS ideas.
- what is vibe coding · What vibe coding is, and what six runs on one builder cost.
- what is an AI app builder · The category explained before the roundup: types, limits, six runs.
- Base44 against Lovable · Credits, GitHub rules and the backend you keep.
- Bubble against Lovable · Workload units against credits.
- alternatives to v0 · Which ones open the repository v0 used.
- alternatives to Bolt · Which ones open the repository Bolt syncs.
- Lovable review · The one builder we measured, reviewed.