SmartUI vs SnapDiff
SmartUI
testmuai.comSnapDiff
snapdiff.aiSide by side
| Figure | SmartUI | SnapDiff |
|---|---|---|
| Price from | $199/mo | $19/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Plans published | 3 | 5 |
| Spec score · Visual Regression Testing Software | 8.0 (#12) | 7.8 (#16) |
| Headquarters | The company lists its headquarters at 1 Sutter Street, Suite 500, San Francisco, California 94104. | Sacramento, California, United States |
| Purpose | SmartUI captures and compares application UI screenshots against baselines to identify visual regressions across browsers, devices, apps, and PDFs. | SnapDiff captures web pages and compares screenshots pixel by pixel to detect visual regressions. |
| Security | TestMu AI states its platform is SOC 2 Type 2 compliant and GDPR and CCPA compliant; it says test virtual machines are reset and user data is wiped after sessions. | The privacy policy states traffic uses TLS 1.2+, API keys are stored as hashes, and sensitive integration credentials are encrypted at rest. |
Plans
In their own words
SmartUI
SmartUI captures application UI screenshots and compares them with baselines to identify visual regressions across browsers, devices, apps, and PDFs. Its Visual AI filters rendering noise and explains meaningful differences, while Smart Ignore can mask dynamic regions and distinguish layout shifts from other changes. Root Cause Analysis compares screenshot differences with code changes and suggests fixes. The listed frameworks include Selenium, Playwright, Puppeteer, Cypress, Appium, Espresso, XCUITest, and Jest. SmartUI describes coverage across 3,000+ browser combinations and 10,000+ real devices, and supports Figma-to-live-UI comparison and PDF checks for text, layout, font, and graphic differences. Git branch-aware baselines work across branches and CI/CD pipelines; diffs and suggestions can be exported to Jira or Slack, with GitHub and GitLab integrations listed. The free plan includes 2,000 screenshots for lifetime use and one month of build history. SmartUI Visual Regression costs $199 a month, billed annually, and includes one year of build history; screenshot volume is selected with the plan.
SnapDiff
SnapDiff captures web pages and compares screenshots pixel by pixel to identify visual regressions. Its HTTP API can compare two URLs without a test suite or CI/CD pipeline, and each diff returns a percentage, a highlighted image, and bounding boxes around changed regions. A GitHub Action runs visual checks on pull requests and can discover Vercel preview URLs. For scheduled monitoring, the watch API checks URLs on a cron schedule and sends webhooks when changes exceed a threshold. Comparisons use pixelmatch with antialiasing detection, configurable thresholds, ignore regions, and CSS selector masking. SnapDiff accepts HTTPS preview, staging, Storybook, and deployment URLs, including those on Vercel, Netlify, and Cloudflare Pages. Its MCP server supports Claude Code, Cursor, Windsurf, and other MCP clients for verifying UI changes. The service says it hides more than 40 cookie banners and 20 chat widgets and blocks more than 30 ad and tracker domains during capture. Free includes 200 diffs and 2,000 screenshots per month; paid plans start with Dev at $19 a month. Screenshots and diff images are retained during a subscription and for 30 days afterward.