Checkly vs Semaphore
Updated June 2026 · A structured head-to-head comparison.
The verdict
Both Checkly and Semaphore are credible monitoring tools, and the right pick comes down to your priorities.
Choose Checkly if you want a higher overall rating (4.7/5). Monitoring as code for developers.
Semaphore — Fast continuous integration.
Checkly vs Semaphore: side by side
| Dimension | Checkly | Semaphore |
|---|---|---|
| Starting price | Free – $80/mo | Free |
| Free plan | Yes | Yes |
| Pricing model | Freemium | Freemium |
| Best for | Developers, Devops Teams | Developers |
| Platforms | Web, Api | Web, Api |
| Rating | 4.7/5Winner | 4.5/5 |
Checkly key facts
- Vendor
- Checkly
- Pricing
- Freemium — Free – $80/mo
- Free tier
- Yes
- Platforms
- Web, Api
- Best for
- Developers, Devops Teams
- Editor rating
- 4.7 / 5
- Founded
- 2018
- Headquarters
- Berlin, Germany
Semaphore key facts
- Vendor
- Semaphore
- Pricing
- Freemium — Free
- Free tier
- Yes
- Platforms
- Web, Api
- Best for
- Developers
- Editor rating
- 4.5 / 5
- Founded
- 2012
- Headquarters
- Remote
Frequently asked questions
Is Checkly better than Semaphore?
Neither is universally better — Checkly 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 Checkly or Semaphore cheaper?
Checkly is the more affordable of the two to get started, at free – $80/mo. Checkly starts at free – $80/mo; Semaphore starts at free.
Can Checkly replace Semaphore?
Yes for most teams — both are monitoring tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.