Retool or an internal tool you own?
Retool is fast, well built and the right answer for plenty of cases. This page works out at what team size a build of your own pays off, and says when it does not.
In short
At small team sizes Retool wins clearly, and not by a narrow margin. The per-user price is low enough that a custom build does not pay back within three years. The calculation only turns once many people read the tools without building them, because every one of those seats keeps costing. Both scenarios are below, including the one we lose.
One scenario, calculated
Calculated from the published prices for Retool Business. Builders are people who edited an app or workflow during the billing cycle; internal users are everyone else. The build cost on our side is a range and depends on how many screens are involved.
Small team: 3 builders, 15 internal users, Retool Business, 3 years
| Line item | per month | Total over 36 months |
|---|---|---|
| Retool, 3 builders 3 x 46 EUR | €138 | €4,968 |
| Retool, 15 internal users 15 x 14 EUR | €210 | €7,560 |
| Retool | €348 | €12,528 |
| FW Delta, One-time build Hosting €60 per month | €60 | €12,000 + €2,160 |
| FW Delta | €60 | €14,160 |
Cheaper over the term
Retool €1,632
Break-even
only after 42 months, so beyond the term
Wider rollout: 4 builders, 60 internal users, Retool Business, 3 years
| Line item | per month | Total over 36 months |
|---|---|---|
| Retool, 4 builders 4 x 46 EUR | €184 | €6,624 |
| Retool, 60 internal users 60 x 14 EUR | €840 | €30,240 |
| Retool | €1,024 | €36,864 |
| FW Delta, One-time build Hosting €60 per month | €60 | €18,000 + €2,160 |
| FW Delta | €60 | €20,160 |
Cheaper over the term
FW Delta €16,704
Break-even
19 months
Assumptions
- Retool Business, published list price, as of August 2026
- Builders at 46 EUR and internal users at 14 EUR per month
- On our side 60 EUR hosting per month, no per-seat fee
- The build costs are assumptions for the given scope, not a quote
- External users, Enterprise and negotiated discounts are not included
Where the two routes differ
| Criterion | Retool | FW Delta |
|---|---|---|
| Pricing model | per builder and per internal user, monthly | one-time build plus hosting |
| Additional read-only people | keep costing, tiered by plan | cost nothing extra |
| Time to first result | very fast, often the same day | a project with analysis, build and testing |
| Custom code | in the places provided, inside a sandbox | without that constraint |
| Version control | available, with its own model and source control on higher tiers | Git, like the rest of the project |
| Operations | run by the vendor, self-hosting available at the same list price | your infrastructure or a maintenance agreement |
| Where data sits | the vendor's infrastructure, self-hosting as the alternative | wherever you put it |
| Processing agreement | Retool acts as processor | your hosting provider acts as processor, one agreement instead of two |
| After cancelling | apps export as JSON, the runtime does not | code and configuration stay |
Stay with Retool when
- the team is small and stays small
- the tools are mostly used by the same people who build them
- it has to happen quickly and nobody can run a project
- the use cases are reading and writing against a database
- no policy requires infrastructure of your own
A build of your own pays off when
- many people only read the numbers and still need a seat
- the business logic goes beyond what runs inside the sandbox
- response times become a problem on large datasets
- where the data sits is fixed by a policy
- the tool is meant to run for years, so the code has to be yours
FAQ
Why does this page include a scenario where Retool is cheaper?
Because it is. At three builders and fifteen readers, Retool comes out roughly 1,600 EUR below a custom build over three years, and the break-even would only arrive after 42 months. A comparison that shows only the cases the seller wins is advertising, not a basis for a decision.
At what point does the calculation turn?
Almost entirely on the number of people who only read. Builders are few and cheap. At sixty internal users Retool costs around 1,024 EUR per month and the build pays back after roughly 19 months. Put your own numbers into the calculator; the order of magnitude shifts quickly.
Is self-hosting Retool cheaper?
No. The list price is the same as the cloud and you carry the operations on top. Self-hosting answers a question about where data sits, not a question about cost.
What happens to the apps if we cancel?
The definitions export as JSON, the runtime does not. An export is therefore a description of what the app did, not a running system. That gap is what a build of your own addresses.
Run it with your own numbers
The decision hangs on how many people need read access. The calculator takes yours.
01
A 30-minute call
We walk through your starting point and say honestly whether a move pays off for you.
02
A fixed-price proposal
Within five working days, with scope, assumptions and what is explicitly not included.
03
Build and handover
Repository access from day one, documentation at the end, no obligation to keep us.
How these figures were produced
- Price as of
- August 2026
- Basis
- Publicly listed prices from Retool, together with the assumptions on this page for user count, volume and term.
- Not included
- Discounts, annual prepayment, enterprise terms, partner rates and country-specific pricing. Internal staff cost on either side is not counted.
- Limits
- Vendor pricing and packaging change. This calculation is a model, not a quote and not a general market price. Check the current vendor price list before deciding, and run the numbers with your own figures.