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fastlane – Accelerate iOS & Android Build & Release Pipelines

Automate your mobile app compilation, testing, and deployment with fastlane, the Ruby‑based tool trusted by founders for rapid launches. 42k+ GitHub stars.
42,221 stars+26★ this week6,040 forksRubyGuide quality 8/10 · reviewed Sep 29Updated 10/9/2026100% free · open source
What it does

Fastlane automates the build, test, and deployment process for iOS and Android apps, saving time and reducing the risk of human error

When to use it
  • •When you need to automate repetitive tasks in your app development workflow
  • •When you want to ensure consistent and reliable builds across different environments
  • •When you need to integrate your app development process with other tools and services, such as CI/CD pipelines
Ready-to-paste prompt
fastlane beta --build_number 12 --scheme MyScheme
Heads up: You need to have the Apple Developer Tools and an Apple Developer account to use Fastlane's Actions related to the App Store, such as `upload_to_app_store`
Saves to your device
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Claude Code
mkdir -p ~/.claude/skills/fastlane && curl -fsSL https://workflowstacks.com/api/skills/fastlane/claude-skill -o ~/.claude/skills/fastlane/SKILL.md
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How fastlane – Accelerate iOS & Android Build & Release Pipelines works
Codeflow
Free to inspect

Fastlane – Accelerate iOS & Android Build & Release Pipelines is a very large Ruby project (~114k lines across 993 code files, plus 527 test files). Setup is light: installs like a normal app. Reading the code is optional. Last commit this month, MIT license, has a test suite.

Size
Very large codebase
~114k lines · 993 code files · days to read — use, don't read
Setup
One-command install
Installs like a normal app. Reading the code is optional.
Runs on
Ruby
No API keys detected
Ruby 83%Swift 14%HTML 1%Objective-C 1%Java 1%
Where to start reading
  1. 1
    README.md
    Start here — what it does and how to install it
  2. 2
    bin/console
    Where the program starts running
  3. 3
    fastlane/README.md
    Inside fastlane/ — the main logic begins here
What's in each folder
fastlane/Core code — the actual logic882 files
internal/Core code — the actual logic5 files
bin/Command-line entry points4 files
spaceship/Folder586 files
gym/Folder340 files
fastlane_core/Folder242 files
trainer/Folder159 files
snapshot/Folder121 files
READMEHas testsDocumentedCI checksMIT licenseUpdated this month
Quick Actions
Details
Creator
fastlane
Language
Ruby
Category
automation
Published
12/2/2014

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Featured on WorkflowStacks
[![Featured on WorkflowStacks](https://workflowstacks.com/api/badge/fastlane.svg)](https://workflowstacks.com/skills/fastlane?utm_source=github&utm_medium=badge)
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