Choose Replit
If you want to build and run an app in a cloud development workspace, with an editor, Git and publishing together.
App builders
Flex vs Replit
Do you want to code in the browser or bring more of your team into the product?
By the Flex team
Reviewed
Which should you choose?
Choose Flex
If you want your product manager to show you a working change to your actual product, rather than another ticket describing it.
You can try the change, point out what needs fixing and review the code before it ships.
How it works
Starting a project
Flex
Start a Hosted App for an internal tool, or connect the repository of the product you want to change.
Connecting data
Replit
Replit offers a managed database. Its usage contributes to the cost of running your app.
Flex
Your engineers connect the database and decide what the app can access. Your team can then build tools using that approved data.
Reviewing changes
Replit
Inspect changes in Replit's Git tools and use your repository's review process.
Flex
Your designer or product manager tries the change in a live preview. Engineering reviews the code before it goes into your product.
Publishing
Replit
Publishing creates a running app separate from the workspace where you edit it.
Flex
Share your internal tool through Hosted Apps. For an existing product, use your normal release process.
Flex Hosted Apps Flex configured data access Flex product-change workflow
Maintaining it
Replit
Replit runs the published app. You still need to fix bugs and update its code; publishing and database usage can keep adding to the bill.
Flex
Come back to the same app or repository for the next change. Your engineers still review changes to product code and manage access to production data.
Pricing
Replit
Your Replit subscription includes credits. Publishing and database usage draw on those credits, with charges for usage beyond the allowance.
Flex
You pay for Flex and the AI you use. With self-hosting, you bring your own model keys and pay for the servers running your previews and apps. Your engineers set up and maintain those servers. Flex hosting takes that server work off your team.
See the linked pricing pages for current prices and plan limits.
Your code and your app
You can keep Replit code in Git, as you can with Flex Hosted Apps. Moving that code to another host does not copy the database or set up user sign-in there.
Need an internal tool on production data?
With Hosted Apps, your team builds internal tools using production data engineering has approved. Access controls and governance are built in. You can let Flex host the environment or run it yourself.
Your engineers connect PostgreSQL or ClickHouse, supply the credentials and decide which environment an app can use. Connecting another database or service may need engineering work.
Sources
Official documentation and pricing checked on 27 September 2026. This is our view of the products, based on their documentation rather than a hands-on benchmark.