Frontend Regression Validator vs Happo
Frontend Regression Validator
github.com
Happo
happo.ioSide by side
| Figure | Frontend Regression Validator | Happo |
|---|---|---|
| Price from | Free | $149/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 9 |
| Spec score · Visual Regression Testing Software | 8.1 (#7) | 9.2 (#1) |
| License | The repository includes an Apache License 2.0, which grants no-charge, royalty-free rights subject to its terms. | The public Happo integration library and legacy happo.io repository are released under the MIT License. |
Plans
Happo
- FreeFree
- FreeFree
- Starter$149 a month
- Starter$149 a month
- Growth$399 a month
- Growth$399 a month
- Pro$749 a month
- Pro$749 a month
- EnterprisePriced on request
In their own words
Frontend Regression Validator
Frontend Regression Validator has no write-up on Specifiction yet; its figures are above.
Happo
Happo checks interface changes with visual and accessibility regression testing. It captures screenshots of component variants in browsers; a snapshot is one variant in one browser, and a run usually occurs once per CI build. Accessibility testing is included on every plan. Framework options include Storybook, Playwright, Cypress, and a generic API. Repository integrations include GitHub, GitHub Enterprise, Bitbucket, Azure DevOps, and GitLab, though GitLab support is experimental. Its CLI detects CI providers such as GitHub Actions, CircleCI, Travis CI, and Azure DevOps. Available browsers vary by plan: the listed options are Chrome, Firefox, Safari, Microsoft Edge, and iOS Safari. The free plan includes 5,000 snapshots per month; once the quota is reached, the account pauses until the next cycle or an upgrade. Paid plans start at $149/mo, with additional snapshots charged on paid tiers. Happo began as a project in 2014, and its commercial product launched in 2017.