Happo vs Screenster
Happo
happo.ioScreenster
screenster.ioSide by side
| Figure | Happo | Screenster |
|---|---|---|
| Price from | $149/mo | $25/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 9 | 6 |
| Spec score · Visual Regression Testing Software | 9.2 (#1) | 8.7 (#2) |
| Spec score · Browser Testing Software | 9.1 (#4) | 8.7 (#8) |
| Headquarters | Stockholm, Sweden; Minneapolis, Minnesota, United States | Washington, DC area |
| Product | Happo is a visual and accessibility regression testing platform for checking interface changes. | Screenster is a UI regression testing tool designed to automate web interface tests. |
| Public API | Happo exposes a REST-like JSON API under the /api namespace for reports and custom integrations. | The public API runs tests with custom parameters, reports run status, and can force a test failure through JavaScript. |
| Security | Happo says data is encrypted in transit and at rest, conducts regular penetration testing, and treats customer screenshots and related data as confidential with account-level access controls. | The privacy policy says Screenster uses encryption, firewalls, and SSL technology as security measures, while noting these do not guarantee against breaches. |
| Support | Support is founder-led by Henric Persson and Joe Lencioni through documentation, email and repository issues. | The support page offers paid plans with web or web and phone support, annual hour quotas, and stated response times. |
| What it does | Happo performs visual regression and accessibility testing for pull requests by rendering UI states and comparing screenshots. | Screenster is a UI and visual-regression testing platform positioned as a code-optional Selenium alternative. |
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
Screenster
- FreeFree
- FreeFree
- Local ScreensterFree
- Basic$25 a month
- Standard$45 a month
- Premium$75 a month
In their own words
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.
Screenster
Screenster is a UI regression testing tool for automating tests of web interfaces. Its no-code recorder captures actions on web pages without requiring code, element IDs, checks, or assertions. Test runs can be compared with a baseline to identify new, deleted, or changed visual and page content. Smart selectors can find page elements after they move or change and adjust timeouts automatically. Users can also write JavaScript or Java tests against the Selenium API within Screenster. The locally installed server can run offline. Screenster says it stopped running its online servers after August 1, 2023, and made local use free without restrictions. The installation guide requires Windows and lists Windows 8, 8.1, 10, Server 2012, and Server 2016; local browser documentation lists Chrome, Firefox, and Internet Explorer. Plans include Free at free, Basic at $25 a month, Standard at $45 a month, and Premium at $75 a month, each billed per tester per month.