UndercoverCI is fully open source and available as a hosted GitHub App.

GitHub App

$49 per month

VAT not included, try it free for 14 days

Fully-featured GitHub App code review integration with quick setup for your organization. Included features:

๐Ÿ‘‰ Coverage warnings as GitHub annotations (via GitHub Checks)

๐Ÿ‘‰ Diff coverage summary view for each commit

๐Ÿ‘‰ Branch coverage support

๐Ÿ‘‰ Unlimited builds for private and public repos

๐Ÿ‘‰ Unlimited users

Sign Up with GitHub

Open Source

The UndercoverCI project and related Ruby gems are entirely open-source and free to use locally and in your CI/CD workflows.

If a hosted and convenient GitHub App integration is not for you, check out these links to get started:


You can pay for UndercoverCI with an accepted credit card (Discover, Visa, Mastercard, AMEX, Diner's Club) or PayPal. Subscriptions and payments are handled by Gumroad Inc. where you can access and modify your data as well as cancel anytime.

Yes. Moreover, Gumroad refunds the full VAT amount to all EU-based business customers (location dependent).

A single subscription allows you to use UndercoverCI within a single GitHub organization only. All members of your organization gain access instantly once they sign in with the correct GitHub login.

UncercoverCI is a dedicated GitHub integration which suports all Ruby and Ruby on Rails projects.

Yes. UndercoverCI will ask for the following GitHub permissions: Email address, Repository metadata (read-only), Repository contents (read-only), Checks (read and write). Permissions can be fine-tuned and granted only for selected repositories.

Look into the undercover gem and command-line tool for a self-hosted (and free) alternative.

The service is free to use for public repositories. If you're an open source contributor you can use UndercoverCI free of charge.