SimpleCov

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

SimpleCov is ranked #10 of 26 in test coverage tools on Inferse. It runs on Linux, macOS, Web, Windows. There is a free plan.

Compared on test coverage tools

Free plan: Yesgithub.com
Coverage types: line, branch, method, oneshot-line, evalgithub.com
Supported languages: Rubygithub.com
Report formats: HTML, JSONgithub.com
Historical trends: Yesgithub.com
Coverage gates: Yesgithub.com

Facts

Purpose: SimpleCov analyzes Ruby code coverage using Ruby’s built-in Coverage library.github.com · 30 Sept 2026
Reports: It includes HTML and JSON formatters and can merge coverage results across test suites.github.com · 30 Sept 2026
Configuration: Configuration supports filters, groups, profiles, line and branch coverage, and coverage thresholds.github.com · 30 Sept 2026
Test mapping: Opt-in test tracking can show which RSpec examples or Minitest tests cover a line.github.com · 30 Sept 2026
Production usage: Oneshot coverage can record production code usage for identifying code that tests or live traffic do not touch.github.com · 30 Sept 2026
Change coverage: The CLI can calculate coverage for changed lines and use a minimum threshold as a gate.github.com · 30 Sept 2026
View templates: With the Rails profile, it can include ERB, Haml, and Slim templates in coverage reports.github.com · 30 Sept 2026
CLI: The command line includes report viewing, test selection, patch coverage, history, status, and badge commands.github.com · 30 Sept 2026
Integrations: The README points to open source formatter and integration plugins, editor integrations, and hosted commercial services.github.com · 30 Sept 2026
Compatibility: The project says it is built in CI on Ruby 3.2+ and JRuby 10+; JRuby supports line coverage only.github.com · 30 Sept 2026
Setup constraint: SimpleCov must start before application code is required to track those files.github.com · 30 Sept 2026
Support: The project directs users to its issue tracker for code and bug reports and its Google Groups mailing list for discussion and announcements.github.com · 30 Sept 2026
License: The repository identifies SimpleCov as MIT licensed.github.com · 30 Sept 2026
Security and compliance: The repository page shows a Security and quality section but states no security certification or compliance standard in the README.github.com · 30 Sept 2026