App-builder code and data options
Compare code export, GitHub sync, backend connections and built-in databases across Bubble, Lovable, Base44 and Replit.
Read our No-code AI app builders guide for the full comparison.
What you need
- Open the CSV files in a spreadsheet, or use the JSON file for the full field names and context.
Full findings, context and source references.
Download JSONAll 16 answers, including their dates, conditions and limits.
Download findings CSVSource references that join to the answer table.
Download sources CSVLimits to keep in mind
- These are dated published findings, with the original check dates shown for each answer.
- Code export does not establish that a complete app, saved data or login services can move.
- GitHub sync does not establish support for importing an existing repository.
- The table covers four questions across four products. It does not compare prices or rank products.
Code and data options
4 questions · 4 products · 16 answers
| Product and question | Answer | Scope, limits and sources |
|---|---|---|
| Base44 Bring your own backend | No | Point the app at a backend you already run.
The app’s data layer stays on Base44. Supabase access is read-only. Airtable and Sheets connections sync data without replacing the backend. An external frontend can use Base44’s backend. Read the published finding
|
| Bubble Bring your own backend | Yes | Point the app at a backend you already run.
Connect a separate backend through an API. Xano is the published example. The SQL connector supports Postgres, MySQL and Microsoft SQL. It needs a connection string and tested queries. SELECT queries return at most 100 results. Read the published finding
|
| Lovable Bring your own backend | Yes | Point the app at a backend you already run.
Connect your own Supabase backend on any plan. Read the published finding
|
| Replit Bring your own backend | Yes | Point the app at a backend you already run.
Third-party connectors require Core. The connector catalog includes PostgreSQL. Read the published finding
|
| Base44 Built-in database & data management | Yes | Store users and content in a real database you can see and query.
Query a MongoDB-compatible document database through the SDK. This is not a SQL database. Read the published finding
|
| Bubble Built-in database & data management | Yes | Store users and content in a real database you can see and query.
Store users and content in a database you can view and query. Read the published finding |
| Lovable Built-in database & data management | Yes | Store users and content in a real database you can see and query.
Store users and content in a database you can view and query. Read the published finding |
| Replit Built-in database & data management | Yes | Store users and content in a real database you can see and query.
Ask Agent to connect the app’s data structure and storage code. Development and production databases are separate. Read the published finding
|
| Base44 Export app source code | Yes | Download the app’s source files to work on outside the builder.
Export requires Builder. Exported code may still need Base44’s hosted database and sign-in services. Replacing those services needs development work. Read the published finding
|
| Bubble Export app source code | No | Download the app’s source files to work on outside the builder.
Records and app settings can be exported. Runnable app source code cannot. Read the published finding
|
| Lovable Export app source code | Yes | Download the app’s source files to work on outside the builder.
Project code can be synced to GitHub on every plan. A paid plan is needed to download it inside Lovable. Third-party license restrictions still apply. Read the published finding
|
| Replit Export app source code | Yes | Download the app’s source files to work on outside the builder.
Download the project files as a ZIP on any plan. Read the published finding
|
| Base44 GitHub sync | Yes | The generated code syncs to a repository you control.
Two-way sync requires Builder. Changes sync automatically on the main branch. There is no manual push step. This finding doesn't establish support for importing an existing repository. Read the published finding
|
| Bubble GitHub sync | Unknown Not confirmed | The generated code syncs to a repository you control.
The available GitHub instructions describe plugin code. They do not confirm sync for the generated app’s source. This finding doesn't establish support for importing an existing repository. Read the published finding |
| Lovable GitHub sync | Yes | The generated code syncs to a repository you control.
Start by exporting the project to GitHub. Sync follows one selected branch at a time. This finding doesn't establish support for importing an existing repository. Read the published finding
|
| Replit GitHub sync | Yes | The generated code syncs to a repository you control.
Manage GitHub code through the Git pane or command line. File history is available. This finding doesn't establish support for importing an existing repository. Read the published finding
|
Moving code needs more than source files
Code export does not establish that a complete app moves elsewhere. Backend connections do not establish that saved data or login services can move.
Each answer keeps the published scope, conditions, source links and original check date. Unknown means the available finding does not establish an answer.
Version history
First edition: four questions across Bubble, Lovable, Base44 and Replit. Original check dates remain with each answer.