Relay.app vs Windmill
Updated June 2026 · A structured head-to-head comparison.
The verdict
Both Relay.app and Windmill are credible automation tools tools, and the right pick comes down to your priorities.
Relay.app — AI-first workflow automation.
Windmill — Internal tools and workflows from code.
Relay.app vs Windmill: side by side
| Dimension | Relay.app | Windmill |
|---|---|---|
| Starting price | Free – $9/user/mo | Free – $10/user/mo |
| Free plan | Yes | Yes |
| Pricing model | Freemium | Freemium |
| Best for | Teams, Startups | Developers |
| Platforms | Web, Api | Web, Self Hosted, Api |
| Rating | 4.6/5 | 4.7/5 |
Relay.app key facts
- Vendor
- Relay.app
- Pricing
- Freemium — Free – $9/user/mo
- Free tier
- Yes
- Platforms
- Web, Api
- Best for
- Teams, Startups
- Editor rating
- 4.6 / 5
- Founded
- 2022
- Headquarters
- San Francisco, CA, USA
Windmill key facts
- Vendor
- Windmill
- Pricing
- Freemium — Free – $10/user/mo
- Free tier
- Yes
- Platforms
- Web, Self Hosted, Api
- Best for
- Developers
- Editor rating
- 4.7 / 5
- Founded
- 2022
- Headquarters
- San Francisco, CA, USA
Frequently asked questions
Is Relay.app better than Windmill?
Neither is universally better — Windmill edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Relay.app or Windmill cheaper?
Relay.app is the more affordable of the two to get started, at free – $9/user/mo. Relay.app starts at free – $9/user/mo; Windmill starts at free – $10/user/mo.
Can Relay.app replace Windmill?
Yes for most teams — both are automation tools tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.