From Lovable, Bolt or Base44 to Bubble.io: moving an AI prototype to production
Short answer: You can't import code from Lovable, Bolt, Base44 or Replit into Bubble.io, so moving means rebuilding the app in Bubble — but not from zero. Your prototype becomes the specification: screens, data model and user flows carry over, and your data can be imported from CSV. A validated MVP usually fits an 8-week rebuild and costs about what a scoped Bubble.io MVP costs.
A new kind of project has become a steady part of our inbox this year. A founder built a prototype with an AI app builder, showed it to real people, and it worked: users signed up, someone asked to pay. Then the prompts stopped working. Every fix broke something else, credits burned faster than features shipped, and nobody on the team could read the code the AI had written.
This guide is what we tell those founders: what actually moves from an AI-generated prototype to Bubble.io, what has to be rebuilt, the three realistic paths, and when you shouldn't migrate at all.
Should you move at all?
Not every AI prototype needs a new home. If it does its job and someone can maintain it, keep it. We compared the platforms in depth in Bubble.io vs Lovable, Replit & Bolt; here is the short version for someone who already has a prototype.
Keep the AI prototype when:
- You're still validating the idea and nobody depends on the app yet
- You, or a co-founder, can read and fix JavaScript
- The app has one type of user and no payments or sensitive data
- Changes by prompt still land cleanly, without breaking other screens
Move to Bubble.io when:
- Real users, payments or personal data are now involved
- You need roles and permissions: admins, customers, vendors seeing different things
- Each AI edit fixes one thing and breaks two others
- Credit or token spend is climbing faster than the product improves
- You want a non-developer team to maintain the product after launch
What actually transfers (and what doesn't)
The most common misconception: that the code can be "converted". It can't. Bubble.io is a visual platform; there is no importer for React or JavaScript. What carries over is almost everything except the code — which is usually the most valuable part anyway.
| What you have | Transfers? | How |
|---|---|---|
| Generated code (React, JavaScript) | No | Rebuilt visually in Bubble; the code serves as a reference for logic |
| Screens and user flows | Yes, as the spec | Screenshots and the live prototype guide the rebuild |
| Data model (tables, fields) | Yes, redesigned | Recreated as Bubble data types, usually simplified |
| Data (records) | Yes | Export to CSV, then Bubble's CSV import or the Data API |
| User accounts | Partly | Accounts import; passwords don't, so users set a new one |
| Files and images | Yes | Re-uploaded or imported by URL |
| Stripe, email, APIs | Reconnected | Same accounts, new connections; Stripe customers stay in Stripe |
| Domain | Yes | DNS pointed to Bubble at launch |
Two details are worth knowing up front. First, Bubble's CSV import creates records in bulk, which covers most prototype databases comfortably. Second, password hashes can't be carried across: plan an email that invites existing users to set a new password on launch day. It's the step founders forget most often.
The design side moves faster than it used to. Bubble's AI Agent can take screenshots of an existing front end and replicate the design, which gives the rebuild a head start. It still needs a person to wire the workflows and privacy rules — the same gap we described in Bubble AI built my app — now what?
What you're starting from, tool by tool
Each builder leaves you with a slightly different starting point, which changes how the data comes out.
- On paid plans the front-end code syncs to a GitHub repository you own
- Data lives in Supabase or Lovable Cloud, not in the exported code — see Lovable's ownership docs
- Migration path: export tables to CSV, or keep Supabase and connect Bubble to it (the hybrid path below)
- Built by StackBlitz; the project is a JavaScript codebase you can download
- The database depends on what the project was connected to, often Supabase
- Migration path: identify where the data actually lives before planning anything else
- Generates UI, backend logic, database, authentication and hosting in one managed platform
- Acquired by Wix in June 2025
- Migration path: because the data is managed for you, confirm how to export every table before you commit to a timeline
- You get real source code and a database you control
- Of the four, the most likely to be worth keeping if you have a developer
- Migration path: database export to CSV; the code documents the business logic
Three realistic paths
1. Full rebuild on Bubble.io (most common)
Everything moves into Bubble: database, logic, users and front end. You end up with one platform, one bill and an app that a non-developer can read and change. This is the right path for most founders without an engineering team, and it's the one we recommend by default.
2. Hybrid: keep Supabase, build the product in Bubble
If your prototype runs on Supabase and other systems already depend on that database, Bubble can talk to it through the API Connector and Supabase's REST API. It avoids a data migration, but you now run two systems, and Bubble's privacy rules don't protect data that lives outside Bubble — security has to be enforced on the Supabase side. Choose it deliberately, not to save a week.
3. Keep the prototype and hire a developer
If the app is fundamentally sound and the problem is simply that nobody can maintain it, a JavaScript developer may be cheaper than a rebuild. The honest test: ask a developer to review the codebase for a day. If the verdict is "rewrite", you're back to path 1 — with better information.
The migration, step by step
- Freeze and record the prototype. Screenshot every screen and record a walkthrough of each user flow. This is your specification.
- List what users actually do. Analytics or a quick user conversation will show which flows matter. Features nobody used don't get rebuilt.
- Redesign the data model for Bubble. Don't copy tables one to one; AI-generated schemas often duplicate data. Get this right first — everything builds on it.
- Build in order: database, then privacy rules, then workflows, then the interface. The screenshots keep the design faithful.
- Import the data on the development database first. Check relationships, dates and file links before touching live.
- Move users. Import accounts, reconnect Stripe customers by email or customer ID, and schedule the "set your new password" email for launch day.
- Switch the domain and keep the old app read-only for a couple of weeks, then shut it down and stop paying for credits.
Timeline and cost
A rebuild from a working prototype is a normal Bubble.io build with the scoping already done. Most validated MVPs fit our 8-week process; simpler tools are faster. Studio budgets follow the same ranges as any build:
| Prototype type | Typical studio budget | What usually takes longest |
|---|---|---|
| Internal tool | $2,000 – $6,000 | Roles and permissions |
| SaaS MVP | $5,000 – $12,000 | Subscriptions and user migration |
| Marketplace MVP | $6,000 – $15,000 | Two-sided payments and data model |
| AI-powered app | $6,000 – $15,000 | AI workflows and usage costs |
Ranges come from our Bubble.io developer cost guide. For monthly running costs after launch — Bubble plan, services and maintenance — try the Bubble.io cost calculator. One more line to budget: keep the old prototype's subscription for the overlap weeks.
Mistakes we see in migrations
- Copying the AI's database one to one. Generated schemas are built for the prompt, not the product. Redesigning costs a day; not redesigning costs months.
- Forgetting the password step. Users who can't log in on launch day assume the product died.
- Skipping privacy rules because "the prototype didn't have them". In Bubble, privacy rules are what keep one customer's data away from another.
- Running both apps with live data for months. Two sources of truth drift apart. Keep the overlap short and the old app read-only.
- Rebuilding every feature. A migration is the cheapest moment to cut what nobody used.
Frequently asked questions
Can I import my Lovable or Bolt code into Bubble.io?
No. Bubble.io is a visual platform and has no importer for React or JavaScript code. The app is rebuilt in Bubble, using the prototype's screens, flows and data model as the specification. Your data can be imported from CSV.
Will my users have to create new accounts?
No, their accounts can be imported, but passwords can't be transferred. The usual approach is an email on launch day asking each user to set a new password.
How long does it take to move an AI prototype to Bubble.io?
A validated MVP usually fits an 8-week build, and simpler internal tools are faster. Because the prototype already answers most scoping questions, the rebuild tends to go faster than a project that starts from an idea.
Should I keep Supabase if my Lovable app uses it?
Only if other systems depend on that database or the data volume makes a migration impractical. Otherwise a full move into Bubble is simpler to run and maintain, because data, logic and privacy rules live in one place.
The bottom line
An AI prototype that found users is a success, not a mistake. It did the expensive part — proving someone wants the product. Moving it to Bubble.io turns that proof into something you can run, change and hand to a team, without rewriting the idea from scratch.
If you have a prototype that's outgrowing its builder, send us the link. We'll tell you what transfers, what needs rebuilding, whether Bubble.io is the right destination, and what it would cost — including when the honest answer is "keep what you have".