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Officially verified details Sherlo

Visual regression testing for React Native. Compare screenshots on iOS & Android simulators, catch visual regressions before release. Free plan, no credit card.

Sherlo

Sherlo Reviews and Details

This page is designed to help you find out whether Sherlo is good and if it is the right choice for you.

Screenshots and images

  • Sherlo Baseline vs snapshot, side by side
    Baseline vs snapshot, side by side //
    2026-08-05
  • Sherlo Changed pixels highlighted automatically
    Changed pixels highlighted automatically //
    2026-08-05
  • Sherlo Review as a team - report and comment
    Review as a team - report and comment //
    2026-08-05
  • Sherlo Built-in inspector - the code behind any screen
    Built-in inspector - the code behind any screen //
    2026-08-05
  • Sherlo Compare against your Figma design
    Compare against your Figma design //
    2026-08-05

Features & Specs

  1. iOS & Android simulators

    Renders your app on real iOS and Android simulators in the cloud - no device farm to manage.

  2. Pixel-by-pixel diffs

    Screenshots every screen and compares each against the previous version, flagging changed pixels.

  3. Team review app

    Developers, designers, PMs and QA review changes together and approve or reject before release.

  4. Storybook integration

    Turns your existing Storybook stories into an automated visual test suite.

  5. CI integration

    Runs in CI on every build via the CLI; both platforms in one run.

  6. Device/theme/language matrix

    Test across many devices, screen sizes, themes and languages from one config.

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Questions & Answers

As answered by people managing Sherlo.
  1. What makes Sherlo unique?

    Sherlo is the visual regression testing tool built specifically for React Native. It renders your app on real iOS and Android simulators in the cloud - native rendering, not React Native Web - and diffs every screen pixel by pixel. Web-first tools like Percy, Chromatic, and Applitools can't test how a React Native app actually looks on a device; Sherlo does.

  2. Why should a person choose Sherlo over its competitors?

    Because it's the React Native specialist. Percy, Applitools, and Chromatic are multi-platform generalists that test web-framework Storybook in a browser, not native iOS/Android rendering. Sherlo runs your app on real iOS and Android simulators, covers both platforms in one run, plugs into CI, and includes the cloud simulators from a free plan - no device farm, no credit card.

  3. How would you describe the primary audience of Sherlo?

    React Native teams that ship UI frequently - developers, designers, PMs, and QA who want to catch visual regressions before release. It fits teams already using Storybook and anyone shipping to many devices, themes, and languages who can't check them all by hand.

  4. What's the story behind Sherlo?

    Sherlo was built by React Native developers who kept shipping UI bugs that slipped past functional tests and were painful to catch by hand across devices. Existing tools were web-first and didn't test native mobile rendering - so they built the visual testing tool they wanted for React Native.

  5. Which are the primary technologies used for building Sherlo?

    React Native, TypeScript, an open-source SDK/CLI (github.com/sherlo-io/sherlo), cloud-hosted iOS and Android simulators, and a web app for reviewing diffs. Integrates with Storybook and any CI pipeline.

Videos

Visual testing for React Native · Sherlo demo

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Is Sherlo good? This is an informative page that will help you find out. Moreover, you can review and discuss Sherlo here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.