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Responsive Tool vs DocFit

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Responsive Tool compared with DocFit
DetailResponsive Tool logo Responsive ToolDocFit logo DocFit
What it doesFree responsive website checker for mobile, tablet and desktop Your docs, updated the moment code merges.
StageNot given MVP
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free: for public repos (unlimited). Team: $49/month with 200 credits/month. Growth: $149/month with 700 credits/month. Docs PRs use 1–4 credits depending on quality preset (Fast ~1, Balanced ~2, Best ~4); 2 credits with own model key. Credit packs: 100 credits $29, 400 credits $99 (one-time, never e
Key features
  • Test multiple device viewports simultaneously
  • Real CSS viewport rendering
  • Share setup links
  • Custom pixel width testing
  • No installation required
  • Sync scroll across panes
  • Browser-based with no account needed
  • Reads merged PRs and linked tickets to understand changes
  • Identifies affected documentation pages with reasons
  • Makes minimal targeted edits to documentation
  • Runs build, lint, link checks and OpenAPI validation
  • Opens pull requests for team review and merge
  • Automatic code sample generation and validation
  • Integrates with Jira, GitHub Issues and Slack
  • Configurable quality presets (Fast, Balanced, Best)
  • Dry-run backfill of last 5 merges without charges
  • Nightly drift scan to detect outdated documentation
What makes it different
  • Compare multiple real device widths side by side instead of switching one at a time
  • Faster than DevTools for checking several device sizes at once
  • Entirely browser-based with no setup, signup or download
  • Built and maintained by one developer in the open
  • Deterministic signals first, not just AI guessing at semantic similarity
  • Your team reviews every change; DocFit never merges directly
  • Usage-based pricing with no per-seat fees
  • Works with your existing docs platform and GitHub workflow
  • Comprehensive verification before PR creation
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)10
Citation Flow (Majestic)250
Referring domains (Majestic)140

4 details filled in for both companies.

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