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Head-to-head · Visual Regression Testing Software

Diffy vs SmartUI

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Diffy #6 in Visual Regression Testing Software 8.6/10 Free plan Free plan✓ 3 of 3 features Visit Diffy
SmartUI #7 in Visual Regression Testing Software 8.5/10 Free plan Free plan✓ 3 of 3 features Visit SmartUI

Diffy leads on 1 check, SmartUI on 0, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreDiffy · 8.6/10
  • Lowest starting priceDiffy · $67/mo
  • Free planboth

Diffy scores higher on our rubric for visual regression testing software: 8.6 against 8.5 out of 10; our editors rank them #6 and #7.

Diffy is cheaper to start at $67/mo against $199/mo. On visual diff modes, SmartUI gives you Ai-assisted where Diffy offers Pixel.

Diffy is the better fit for teams comparing many environments and breakpoints. SmartUI is the better fit for AI-assisted cross-platform visual testing.

  • Diffy fits best

    Teams comparing many environments and breakpoints

  • SmartUI fits best

    AI-assisted cross-platform visual testing

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Diffy 8.6/10 Visit ↗ SmartUI 8.5/10 Visit ↗
At a glance
Editor score 8.6 8.5
Ranking #6 in Visual Regression Testing Software #7 in Visual Regression Testing Software
Best for Teams comparing many environments and breakpoints AI-assisted cross-platform visual testing
Pricing model Free plan + paid Free plan + paid
Starting price $67/mo (best) $199/mo
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud
Platforms Web Web, iOS, Android
Support Email, Docs Email, Live chat, Community, Docs · 24/7
Integrations 11 integrations 120+ integrations
Built for Small business, Mid-market Small business, Mid-market, Enterprise
Features Diffy 3/3 · SmartUI 3/3
Cross-browser capture ✓ ✓
CI/CD integrations ✓ ✓
Approval workflow ✓ ✓
Specs
Visual diff modes Pixel Ai-assisted
Project limit Not checked yet Not checked yet
Browser count 2 browsers Not checked yet
Our review
Pros
  • Responsive captures across production, staging, development, and custom URLs
  • Masking, authenticated captures, and dynamic-content mocking reduce false positives
  • CI/CD support through CLI, GitHub Action, and multiple integrations
  • AI comparison with rendering-noise filtering and Smart Ignore
  • Web, mobile, PDF, and Figma visual testing coverage
  • Git-aware baselines, review workflows, and broad CI integrations
Cons
  • The Free Plan is limited to production and staging environments
  • CI automation and multiple environments require a paid Pro Plan
  • Monthly Pro pricing is higher than the annual billing option
  • Free plan is limited to 2,000 screenshots for a lifetime
  • Build history is limited to one month on the Free plan
  • Paid visual regression testing starts at $199 per month, billed annually
Our verdict

Diffy is a hosted visual regression testing platform for agencies and development teams managing websites. It captures pages across configurable responsive breakpoints and compares production, staging, development, and custom environments.…

Read the review →

SmartUI is TestMu AI’s visual regression testing product for development and QA teams that need to compare interfaces across browsers, devices, viewports, operating systems, and document formats. It supports web, iOS, Android, and API…

Read the review →
  1. DiffyVisual Regression Testing Software 8.6Free plan
  2. SmartUIVisual Regression Testing Software 8.5Free plan

Strengths and trade-offs

  • Diffy — where it wins

    • Responsive captures across production, staging, development, and custom URLs
    • Masking, authenticated captures, and dynamic-content mocking reduce false positives
    • CI/CD support through CLI, GitHub Action, and multiple integrations

    Where it doesn't

    • The Free Plan is limited to production and staging environments
    • CI automation and multiple environments require a paid Pro Plan
    • Monthly Pro pricing is higher than the annual billing option

  • SmartUI — where it wins

    • AI comparison with rendering-noise filtering and Smart Ignore
    • Web, mobile, PDF, and Figma visual testing coverage
    • Git-aware baselines, review workflows, and broad CI integrations

    Where it doesn't

    • Free plan is limited to 2,000 screenshots for a lifetime
    • Build history is limited to one month on the Free plan
    • Paid visual regression testing starts at $199 per month, billed annually
  • Diffy8.6/10 · Free plan

    Diffy combines responsive visual comparisons, environment coverage, and CI automation.

    Visit DiffyFull verdict →
  • SmartUI8.5/10 · Free plan

    A broad visual testing suite with AI comparison, useful free coverage, and a costly paid tier.

    Visit SmartUIFull verdict →

More comparisons

All visual regression testing software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update