Why I Replaced Retool With GenMB for Internal Tools

What Retool gets right

Let's be fair: Retool figured out a real problem. Every team has spreadsheets that should be apps, and writing those apps from scratch is expensive. Retool's drag-and-drop UI builder + connectors model is the right shape. We're not saying it's bad.

What we're saying is the model breaks down at scale, and there's now a better-fit alternative.

Where the model breaks

Per-seat pricing. Retool bills per user, so cost grows with every operations person you add. A tool that everyone in the company should be able to open is exactly the tool that per-seat pricing punishes.

The "I can't express this" wall. Retool's UI builder is excellent right up until you need a layout, a state machine, or a UI behavior that isn't in their primitives. Then you write JS in a tiny embedded editor. Then you copy that JS into another component. Then you wish you had a real codebase.

Closed source. When you leave Retool you have an export, but you don't have a project. Recreating the app on a different stack is essentially a rewrite.

The GenMB equivalent

GenMB generates a real React + TypeScript project. You describe the tool in plain English and get the full source. Some specifics:

Pricing model. The Business plan is $129/mo with 1,000 shared monthly credits that the whole workspace draws from. Generation and edits cost credits; running the finished app and adding viewers does not. There's no per-seat tax.

Real codebase. On Pro and above you can read the code, edit it in the GenMB editor or in your local VS Code via the MCP server, and export the ZIP with no cap on how many times. If you ever leave GenMB, you take a working React + TypeScript project with you.

Custom UI is easy. Need a complex layout, drag-and-drop, embedded canvas, or whatever? Describe it in chat. GenMB generates the components. No "we ran out of UI primitives" wall.

Plan-gated by you, not by the platform. Your internal tool can have an admin role that adds users, an editor role that updates records, a viewer role. RBAC ships as a built-in plugin.

A specific example

Take a typical Retool internal tool: an inventory dashboard with a few dozen components and connectors to Postgres, Stripe, Slack, and S3. In GenMB that is two prompts:

"An inventory dashboard. Reads SKUs from Postgres, payments from Stripe, ticket data from Postgres. Shows a table per region, with a chart of stock levels over time. Admins can mark SKUs as discontinued. When stock hits zero, post to Slack #ops."

Then a follow-up:

"Add a daily 9am export of every transaction to S3 as Parquet."

You pay credits for the generation and the refinement passes, then the flat plan price. The team owns the source.

What you give up

Honest tradeoffs:

• No native form builder. Forms in GenMB are React forms. They're easy to write, but you don't get a "drag to add a field" UI.
• No first-party query editor. You write SQL in the data browser or use the database query workflow node. Retool's query UI is better-polished.
• No row-level data editing UI. GenMB's data browser is for inspection, not for spreadsheet-style edits in production. You'd build the edit UI as part of your tool.

These are gaps we'll close, but they're real today.

When to pick what

Pick Retool if your tools are mostly forms over a database, your team is small, and budget isn't a primary concern.

Pick GenMB if you want full source ownership, you have non-form UI requirements, you have ≥10 users, or you want to combine internal tools with workflows + scheduled agents in one platform.

Try it

Start from the internal tool landing page for prompt suggestions.