Developer tools for Flutter & Dart
C-Rank Grade: A (Welcoming) - 68/100
External PR Merge Rate: 82%
Response Time: 17h
First Timer Success: 76%
flutter/devtools has a recorded first-timer success rate of 76.5%. Repositories ranked A typically provide actionable feedback during code reviews and actively nurture new community contributors.
Maintainers in flutter/devtools respond to incoming external pull requests in approximately 17.2 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.
The C-Rank™ system evaluates GitHub projects on a 0–100 scale using real data: PR merge rates, review turnaround time, active maintainer presence, and first-time contributor success. A score of 67.6 places flutter/devtools in the A tier.
The external contributor pull request merge rate for flutter/devtools is 82.4%, based on public PR activity from non-core contributors.
flutter/devtools currently has 1 active issue(s) tagged with beginner-friendly labels like "good first issue", "beginner", or "up-for-grabs".
Highly welcoming maintainers in flutter/devtools. Prompt code reviews with positive guidance for new contributors.
Average Response Latency
Tracks hours until a maintainer leaves a review, comment, or PR response.
External Acceptance Rate
Percentage of community pull requests successfully merged into main.
First PR Conversion
Rate at which developers submitting their first repository PR succeed.
Show contributors that your repository actively reviews and merges external pull requests.
[](https://getmerged.abhishekco.de/flutter/devtools?utm_source=github&utm_medium=badge)
Historical health & responsiveness evolution
External PR acceptance
First PR success rate
50% receive response in
90% receive response in
Maintainer review activity heatmap & prime window prediction
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Detected: UTC
Maintainers are most responsive around 18:00 UTC (18:00 UTC in your timezone). Recommended submission window is Wednesday - Friday from 16:00 to 20:00 UTC (16:00 - 20:00 UTC local).
Limited recent maintainer review activity recorded for this repository. Prediction based on heuristic baseline.
Maintainer Strategy: Maintainer Sweet Spot: PRs under 150 lines merge in ~11 hours (96% approval). Large PRs (>500 lines) take ~82 hours (37% approval). Keep your diff compact for rapid review.
Enter your branch size and test coverage below to forecast review turnaround and get 1-click git splitting commands.
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Currently when you run your app in profile-mode, the performance panel shows a disabled checkbox that makes it seem like it should be possible to "count widget builds" (see screenshot below) In actuality, "count widget builds" relies on the trackRebuildDirtyWidgets service extension, which uses debugOnRebuildDirtyWidget. This is only available in debug-mode: https://github.com/flutter/flutter/blob/f9e809913240552c391bf31b1cfdbdf410224d8c/packages/flutter/lib/src/widgets/debug.dart#L59 Instead of "To see widget rebuilds for Flutter frames, enable CountWidgetRebuilds", we should remove the checkbox and update the text to say "Rebuild information not available for this frame. Widget rebuild counts are only available when running an app in debug-mode."
Rate what actually matters after opening a pull request here.
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When evaluating whether to contribute to flutter/devtools, response velocity and maintainer engagement are crucial. GetMerged continuously tracks pull request trajectories, first-comment latency, and code review rounds to help developers avoid submitting pull requests to backlogged repositories.
Currently, maintainers of flutter/devtools acknowledge new external contributions in approximately 17 hours. Out of all submitted pull requests from non-core authors in the last 180-day window, 82.4% were successfully merged into the primary branch.
flutter/devtools has a recorded first-timer success rate of 76.5%. Repositories ranked Welcoming typically provide actionable feedback during code reviews and actively nurture new community contributors.
The initial maintainer response time averages ~17 hours. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.
The C-Rank™ index scores repositories on a 0 to 100 scale using an objective formula: external PR merge rates, initial response speed, active maintainer count, and first-time contributor retention. A score of 67.6 places flutter/devtools in the Welcoming tier.
The external pull request merge rate is 82.4%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.
Yes, flutter/devtools currently has 1 active issue(s) tagged with beginner-friendly labels. You can inspect these directly from the repository issues tab.
All metrics displayed for flutter/devtools are automatically retrieved via the public GitHub API and recalculated daily. Insider pull requests submitted by repository owners or organization members are excluded from merge rate calculations to preserve objective external contributor statistics.