There is a bunch of services that offer integration with your existing CI pipeline and SimpleCov coverage reports. Please note these are not associated with the SimpleCov project itself, so please report problems with these integrations with their respective owners.
by Codacy
Upload coverage reports to codacy.com, a hosted (or self-hosted) software quality analysis platform that also includes coverage reporting.
by Code Climate
Upload coverage reports to codeclimate.com, a hosted software quality analysis and that also includes coverage reporting.
by Codecov
Upload coverage reports to codecov.io, a hosted coverage reporting solution.
by Coveralls
Upload coverage reports to coveralls.io, a hosted coverage reporting solution.