The Complete Guide to Migrate from Bubble.io to Custom React/Next.js

Why Teams Choose to Leave Bubble.io for React/Next.js

Teams do not leave Bubble.io because it is a bad product. They leave because their app has grown past what Bubble was designed to handle.

Common Reasons Bubble Apps Outgrow No-Code

Bubble works well for MVPs and early-stage products. Once your app gets real usage, specific cracks start to show.

The most common triggers include:

• Performance bottlenecks: Bubble's rendering engine adds overhead that compounds as page complexity grows. Apps with dynamic data, large lists, or complex conditional visibility start feeling slow.
• Workflow complexity: Bubble workflows are visual, which is great for simple logic. When you have 40-step workflows with nested conditionals and custom states, they become nearly impossible to debug or hand off.
• Frontend limitations: Bubble's responsive system is improving, but it still cannot match what a developer can build with React and a proper CSS layout system. Pixel-perfect UI, custom animations, and advanced interactions are painful.
• Plugin dependency: Core features that rely on third-party Bubble plugins create fragility. If a plugin is abandoned or breaks after a Bubble update, your app breaks with it.
• Hiring friction: Engineers do not want to work in Bubble. If you plan to build a technical team, a custom stack is far easier to staff.

When a Full Rebuild Is Better Than Patching Bubble

There is a point where adding more workarounds costs more than rebuilding properly. You are probably past that point if your backend workflows have grown into a maze of interdependencies, if you are using multiple plugins to approximate a single standard feature, or if your team spends more time debugging Bubble quirks than shipping product.

A full Bubble to custom code rebuild also makes sense when your UI requirements demand something Bubble simply cannot produce. Custom data visualizations, real-time collaborative features, native mobile parity, and complex form logic all hit hard limits in Bubble.

If the app is core to your business and you expect it to grow, patching is a short-term fix with compounding costs.

What a Bubble to Custom Code Migration Actually Changes

This is not just a frontend swap. When you migrate from Bubble.io to React/Next.js, you are replacing every layer of the stack.

Bubble abstracts your database, your API layer, your auth system, your backend logic, and your frontend into a single visual environment. Moving to custom code means each of those layers becomes explicit and independently managed. Your data moves into PostgreSQL or Supabase. Your workflows become API routes and service functions. Your auth moves into a dedicated provider. Your frontend becomes a React application with real component architecture.

That is a bigger change than most founders expect. Plan for it accordingly.

Pre-Migration Assessment: How to Audit Your Bubble App

Before any code is written, you need a complete inventory of your Bubble app. Skipping this step is the most common reason Bubble migrations stall halfway through.

Document Bubble's Database Structure

Open your Bubble editor and go through every data type. For each one, record:

• All fields and their types (text, number, date, file, list, thing reference)
• Relationships between data types
• Option sets and their values
• Privacy rules attached to each type

The goal is a migration inventory, not a perfect schema. You are creating a map you can later translate into SQL tables. Pay special attention to lists on things, which are Bubble's way of storing one-to-many relationships inside a single record. These will need to be normalized into separate tables in a relational database.

Bubble privacy rules control which users can read or modify records. In a custom stack, this logic moves into API authorization middleware and backend access rules. Document every privacy rule now so nothing gets missed during the rebuild.

Map Every Workflow and Backend Process

Bubble's visual workflows hide a surprising amount of business logic. Go through every page and map out:

• Page-level workflows and their triggers
• Reusable element actions
• Backend workflows and their triggers
• Scheduled API workflows (recurring jobs)
• Custom events and their parameters

For each workflow, write a plain-language description of what it does. Do not assume the logic is obvious from the visual builder. Some workflows have conditional branches that only fire in specific states, and those are easy to miss if you are moving fast. A workflow that looks like three steps in Bubble can translate into a dozen lines of conditional logic in code.

Inventory Plugins and API Integrations

List every plugin installed in your app and note what it does. Then categorize each one:

• Core functionality: The app breaks without it (Stripe payments, SendGrid email, Twilio SMS)
• Enhancement: Adds a feature but has a native alternative (date pickers, rich text editors)
• Workaround: Exists because Bubble could not do something natively

For each core plugin, identify the official SDK or HTTP API you will use in the custom stack. For workarounds, question whether the feature is still needed at all. This inventory directly shapes your Bubble to React migration scope and cost.

Data Export and Database Schema Mapping

Exporting your Bubble data correctly is one of the highest-risk steps in the migration. Errors here cause data loss, broken relationships, or a schema that does not fit your new backend.

How to Export Data from Bubble Without Losing Relationships

Bubble lets you export each data type as a CSV from the Data tab in your editor. Export every type, including option sets. Before you do anything with those files, clean them:

• Remove Bubble's internal ID format from relationship fields (Bubble stores references as unique IDs)
• Check for blank required fields
• Normalize repeated or inconsistent values in text fields
• Separate any fields that contain concatenated data

Export your Bubble app data and then reshape it using a spreadsheet or a lightweight ETL script before importing into your new database. Do not import raw Bubble CSVs directly. They will not map cleanly, and relationship fields will break on import.

Translate Bubble Data Types into Relational Tables

Each Bubble data type becomes a SQL table. Each field becomes a column. Relationships become foreign keys.

The translation is mostly straightforward, but lists on things require a decision. If a User has a list of Orders in Bubble, that is stored as a multi-value field on the User record. In PostgreSQL, that becomes an Orders table with a user_id foreign key column. You are normalizing what Bubble denormalized.

For Supabase specifically, you get PostgreSQL with a built-in auth schema, which simplifies the user table migration. Firebase is a different model entirely: you are mapping to a document structure rather than relational tables, which changes how you handle joins and queries.

Handle Bubble-Specific Patterns in the New Schema

Option sets in Bubble are essentially enums. In PostgreSQL, you can represent them as an ENUM type or as a reference table, depending on whether the values need to change at runtime.

Bubble's privacy rules do not have a direct database equivalent. The access control logic they contain needs to move into your API layer as authorization checks. Document each rule and decide whether it belongs in a middleware function, a row-level security policy in Supabase, or a service-layer check in your application code.

Denormalized patterns that Bubble makes easy, like storing calculated values directly on a record, should be evaluated carefully. In a custom stack, computing those values at query time rather than storing them keeps your data consistent and reduces sync errors.

Rebuilding the UI/UX in React and Next.js

The UI rebuild is the most visible part of the migration. Users will notice regressions here immediately, so approach it with more discipline than you might expect.

Use the Bubble App as a Living Wireframe

Your existing Bubble app is the most accurate spec you have. Do not start from scratch. Take screenshots of every page and state, map out every interaction, and document every conditional visibility rule.

This gives your React developers a precise blueprint. It also surfaces edge cases early, like empty states, error states, and loading states that Bubble handles automatically but your custom app will need to handle explicitly. Missing these states is one of the most common causes of post-launch regressions in Bubble to Next.js projects.

Choose Component-by-Component or Page-by-Page Rebuilds

Two approaches work here, and the right one depends on your app's structure.

Component-first: Build your design system and reusable components before assembling pages. This works well for apps with consistent UI patterns and a clear component hierarchy. It takes longer upfront but produces cleaner, more maintainable code.

Page-by-page: Build and ship one complete page at a time. This works well when you need early validation or when different parts of the app have very different UI patterns. It lets you test real user flows faster.

For most Bubble to React migrations, a hybrid approach works best: build the core components first, then assemble pages quickly using those components.

Recreate Responsive Behavior Intentionally

Bubble's responsive engine handles a lot automatically. React does not. Every breakpoint, every layout shift, every mobile-specific behavior needs to be explicitly coded.

Go through your Bubble app on mobile, tablet, and desktop before rebuilding. Screenshot every layout state. When you rebuild in React and Next.js, test against those screenshots at every breakpoint. Do not assume the layout will work because it looks right on desktop. Optimizing performance for ReactJS apps also means getting layout and rendering right from the start, not as an afterthought.

Workflow, API, and Integration Migration

Many Bubble apps have more backend logic than their owners realize. Visual workflows feel lightweight, but they often contain the core business rules of the product.

What Bubble Features Become in React/Next.js

Translate Visual Workflows into Code

Each Bubble workflow has a trigger and a sequence of actions. The trigger usually maps to a frontend event (button click, page load, input change). The actions need to be split: UI actions stay in the React component, and business logic moves to the backend.

A workflow that creates a record, sends an email, and updates a status should not live in a single frontend function. The record creation and email trigger belong in an API route or service layer. The status update is a consequence of that backend operation, returned to the frontend as a response.

This separation is what makes your new codebase testable and maintainable. Bubble mixes these concerns by design. Your custom stack should not.

Replace Backend Events with Jobs and Queues

Bubble's scheduled API workflows become cron jobs or queue-based workers. The logic is the same. The implementation is just explicit rather than visual.

For simple recurring tasks (daily digests, cleanup jobs, status checks), Vercel Cron or AWS EventBridge handles scheduling cleanly. For event-driven automation that needs retry logic or fan-out (sending notifications to many users, processing uploads), a queue like BullMQ, SQS, or Inngest is the right tool.

The automation you built in Bubble is not lost. It is implemented in a way that you can test, version, and monitor properly.

Replace Plugins and API Connectors with SDKs

Most Bubble plugins are wrappers around third-party APIs. In a custom stack, you use the official SDK directly.

Common replacements:

• Stripe plugin → stripe npm package
• SendGrid plugin → @sendgrid/mail npm package
• Twilio plugin → twilio npm package
• Google Maps plugin → @googlemaps/js-api-loader or react-google-maps
• Bubble API Connector → fetch or axios with your own service wrapper

Official SDKs are better documented, more actively maintained, and not dependent on a Bubble plugin author keeping up with API changes. This is one of the clearest long-term wins of the Bubble to custom code migration. The React JS frameworks you choose will also shape how you structure your service layer, so make that architectural decision before you start writing integration code.

Authentication, Testing, and Deployment Strategy

The safest way to migrate Bubble authentication is to move users into Auth0, Clerk, or Supabase Auth while preserving sessions and minimizing password resets.

Migrate Users Without Forcing Password Resets

Bubble stores passwords as hashed values that you cannot export. That means you cannot directly import credentials into a new auth system. Your options are:

• Forced reset: Email all users with a password reset link on launch day. Simple but disruptive.
• Lazy migration: Keep Bubble running for auth during a transition period. Users who log in get migrated to the new system at that point. Others get a reset prompt after a cutoff date.
• SSO bridge: If your users already authenticate via Google or another OAuth provider, the migration is straightforward. The identity is owned by the OAuth provider, not Bubble.

Supabase Auth and Clerk both support custom user import flows that let you pre-populate user records without requiring immediate password resets. Plan this step early. Auth failures on launch day are the worst possible user experience.

Choose Between Phased Migration and Big-Bang Cutover

Both approaches work. The choice depends on your risk tolerance and team capacity.

Phased migration: Run Bubble and your new Next.js app in parallel. Migrate users and features gradually. Lower risk, but requires maintaining two systems simultaneously and managing data sync between them.

Big-bang cutover: Build the full custom app, test thoroughly, then switch DNS and decommission Bubble in a single event. Higher coordination risk, but simpler to execute if your testing is solid.

For most apps under 10,000 users with a reasonably contained feature set, a big-bang cutover with a well-tested staging environment is the cleaner choice. Phased migration makes more sense for apps with complex data relationships or large user bases where even a small percentage of failures is unacceptable.

Test Against the Bubble App Before Launch

Run both apps simultaneously during QA. For every critical workflow in Bubble, execute the same workflow in your Next.js app and compare outputs.

Your testing checklist should cover:

• Authentication flows (login, signup, password reset, session expiry)
• Data reads and writes across all major entities
• Third-party integrations (payments, email, SMS)
• Responsive layout at mobile, tablet, and desktop
• Performance under realistic load
• Edge cases: empty states, error states, concurrent edits

Do not decommission Bubble until every item on that list passes. Keep Bubble accessible (even if read-only) for at least two weeks after launch in case you need to reference original data or behavior.

Bubble Migration Cost, Timeline, and Planning

Bubble migration cost and timeline depend almost entirely on app complexity. Here are realistic ranges based on typical project scope.

Estimate Effort by App Complexity

These ranges assume a small team of 2–3 engineers. Solo freelancer work can be cheaper but typically takes longer. A larger team can compress the timeline but increases coordination overhead.

Identify the Main Cost Drivers

Not all migrations land at the same point in these ranges. The factors that push cost higher include:

• Data cleanup: Inconsistent or denormalized Bubble data that requires significant transformation before import
• Auth migration: Complex user roles, SSO requirements, or a large user base requiring a careful transition
• Plugin replacement: Core features built on unstable or poorly documented Bubble plugins that need to be rebuilt from scratch
• UI complexity: Highly custom interfaces, animations, or data visualizations that Bubble approximated but never fully supported
• Parallel testing: Running both systems simultaneously and validating data consistency across them

Understanding these drivers helps you scope the project honestly before you start. Scaling ReactJS applications after migration also adds to the long-term investment, but it is an investment in infrastructure you actually own.

Set a Realistic Migration Timeline

The hour estimates above rarely translate directly into calendar time. A 300-hour project does not take 7.5 weeks at 40 hours per week.

Data validation, stakeholder reviews, QA cycles, and integration debugging all introduce delays that are hard to predict upfront. Add 20–30% buffer to any timeline estimate. Plan your launch date around that buffered estimate, not the optimistic one.

Also account for the fact that your team will still be running the Bubble app during the migration. Support requests, urgent fixes, and business demands do not pause because a rebuild is in progress.

Ready to Move Off Bubble?

Migrating from Bubble.io is a structured project, not a gamble, but it requires the right team and a clear plan from day one. If you are trying to figure out whether your app is ready for a custom rebuild and what it would actually take, talking to engineers who have done it before is the fastest way to get clarity.

Book a free consultation with the Brilworks team and walk away with a realistic assessment of your migration scope, timeline, and cost.