# MobileNativeFoundation/bluepill

Bluepill is a reliable iOS testing tool that runs UI tests using multiple simulators on a single machine

Repository: https://github.com/MobileNativeFoundation/bluepill
Canonical: https://ross.abutalabs.com/products/bluepill
Language: Objective-C
License: BSD-2-Clause
License Family: permissive
Topics: bluepill, multiple-simulators, xcode, parallel, ios, test
Last push: 2024-08-12T17:40:02+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3521, "days_push": 751, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3209, forks 228 (observed 2026-08-28T04:07:48.706446+00:00)

## What it is
Bluepill is a command-line tool that runs iOS UI and unit tests in parallel across multiple simulators on a single macOS machine. Originally built by LinkedIn, it packs tests into groups, retries flaky or crashed simulator runs, and generates JUnit reports.

## Use cases
- run iOS UI tests in parallel on one machine
- speed up a large iOS test suite
- retry flaky simulator test runs automatically
- generate JUnit reports from xcodebuild test runs
- run iOS tests headless to reduce memory usage
- distribute xctest bundles across multiple simulators

## When to choose
- you have a large iOS test suite that takes too long with a single simulator
- you use xcodebuild build-for-testing and .xctestrun files
- you need automatic retries when simulators hang or crash
- you want JUnit output for CI integration

## When to avoid
- you develop for Android or cross-platform only
- you need a GUI test runner or Xcode-integrated testing
- you don't run tests on macOS with Xcode installed
- you need actively developed tooling with frequent updates

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: testing, e2e-testing, cli
- domain: testing, mobile-development, developer-tools
- platform: cli
- tags: ios, xctest, xcodebuild, parallel-testing, simulators, junit-reports, macos

## Member repositories
- MobileNativeFoundation/bluepill (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:48.706446+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:24:44.656133+00:00, confidence not recorded.
  - readme: https://github.com/MobileNativeFoundation/bluepill (fetched 2026-08-28T04:07:48.706446+00:00, sha fc672ecce797)
- Data as of 2026-08-30T08:39:29.467469+00:00.