Complexity Indicator
UnclaimedReal-time code complexity analysis and metrics dashboard for VS Code, supporting any programming language.
Visit WebsiteFreemiumVisit Website
Tracked since2026
0 reviews trackedThe Bottom Line
Entry price
Free plan available, paid tiers above
Biggest pro
Provides immediate feedback on code quality
Biggest con
Currently only available as a VS Code extension
TL;DR - Complexity Indicator
- Analyzes code complexity in real-time within VS Code.
- Provides a detailed dashboard with 9 key code metrics.
- Works with any programming language to improve code quality.
Pricing: Free plan available
Best for: Growing teams
What is Complexity Indicator?
Complexity Indicator is a VS Code extension designed to help developers understand and improve the quality of their codebase by providing real-time complexity analysis. It displays a rich metrics dashboard directly in the sidebar, offering insights into various aspects of code health for the active file. While initially conceived with Flutter/Dart developers in mind, its functionality extends to any programming language, making it a versatile tool for a wide range of developers.
The extension continuously updates metrics as you type, save, or switch files, ensuring you always have an up-to-date view of your code's complexity. It presents a comprehensive set of 9 metrics, including a weighted Complexity Score, Maintainability Index, Lines of Code (LOC), Function Count, Cyclomatic Complexity, Max Nesting Depth, Average Parameters, Comment Ratio, and Import Count. Each metric comes with clear explanations, healthy thresholds, and actionable advice, helping developers identify areas for refactoring and maintain clean, readable, and testable code. A status bar badge provides an at-a-glance complexity label (Low, Medium, High, Very High, Critical), allowing for quick assessment of file health.
Pros & Cons
Pros
- Provides immediate feedback on code quality
- Supports a wide range of programming languages
- Offers actionable insights with healthy thresholds and refactoring tips
- Integrates seamlessly into the VS Code environment
- Helps developers write more maintainable and readable code
Cons
- Currently only available as a VS Code extension
- May require developers to learn new metrics and their implications
Key Features
Real-time metric updates as you type, save, or switch filesDedicated sidebar panel for a rich metrics dashboardStatus bar badge displaying complexity labels (Low, Medium, High, Very High, Critical)Info tooltips for each metric explaining its meaning and healthy thresholdsMulti-language support for TypeScript, JavaScript, Python, Go, Rust, and more9 key metrics: Complexity Score, Maintainability Index, LOC, Function Count, Cyclomatic Complexity, Max Nesting Depth, Average Parameters, Comment Ratio, Import Count
Pricing Plans
Free TrialFree
$0 USD per month
- Unlimited public/private repositories
- Dependabot security and version updates
- 2,000 CI/CD minutes/month (Free for public repositories)
- 500MB of Packages storage (Free for public repositories)
- Issues & Projects
- Community support
- GitHub Copilot Access
- GitHub Codespaces Access
Team
$4 USD per user/month
- Everything included in Free
- Access to GitHub Codespaces
- Repository rules
- Multiple reviewers in pull requests
- Draft pull requests
- Code owners
- Required reviewers
- Pages and Wikis
- Environment deployment branches and secrets
- 3,000 CI/CD minutes/month (Free for public repositories)
- 2GB of Packages storage (Free for public repositories)
- Web-based support
- GitHub Secret Protection
- GitHub Code Security
Enterprise
Starting at $21 USD per user/month
- Everything included in Team
- Data residency
- Enterprise Managed Users
- User provisioning through SCIM
- Enterprise Account to centrally manage multiple organizations
- Environment protection rules
- Repository rules
- Audit Log API
- SOC1, SOC2, type 2 reports annually
- FedRAMP Tailored Authority to Operate
How Complexity Indicator's pricing compares
At $4/mo, Complexity Indicator is the most affordable of its 4 direct competitors.
Entry paid plan, monthly.
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Complexity Indicator FAQ
How does the Complexity Score combine different metrics?
The Complexity Score is a single weighted score from 0-100 that aggregates several signals: Cyclomatic Complexity (35%), Max Nesting Depth (25%), Lines of Code (20%), Average Parameters (12%), and Function Count (8%). A lower score indicates better code health, with a target of ≤ 40.
What is the significance of the Maintainability Index and how is it calculated?
The Maintainability Index (MI) is a score from 0-100, based on a normalized Microsoft formula, where higher is better. It's calculated as MI = 171 − 0.23 × CC − 16.2 × ln(LOC) + 50 × √(2.46 × commentRatio). A score ≥ 85 is excellent, while < 50 suggests refactoring is needed.
How does the extension help identify overly complex functions or files?
The extension uses metrics like Cyclomatic Complexity (counting independent execution paths), Max Nesting Depth (deepest control flow structures), and Function Count. For instance, a Cyclomatic Complexity > 20 indicates high risk, Max Nesting Depth ≥ 5 is considered dangerous, and files with > 15 functions often benefit from splitting.
What are the recommended thresholds for code readability and documentation according to the extension?
For readability, the extension suggests keeping files under 300 Lines of Code (LOC). For documentation, a healthy Comment Ratio is between 15-30%. Too low may mean under-documented code, while too high could indicate outdated or noisy comments.
Source: github.com