About RubyMotion
RubyMotion is a commercial toolchain that lets developers build native iOS, Android, and macOS apps using the Ruby programming language instead of Objective-C, Swift, or Java/Kotlin. It compiles Ruby down to native machine code and gives full access to the underlying platform APIs, paired with a terminal-based workflow, REPL, and gem-style dependency management. Originally created by HipByte and now engineered by DragonRuby LLP, it is a long-standing, slow-moving project best treated as a legacy/maintenance-mode tool today.
Pros & Cons
Pros
- Lets experienced Ruby developers build genuinely native mobile apps without learning Swift, Kotlin, or Java
- Compiles to native machine code rather than running an interpreter, so apps are real native binaries
- Full, unrestricted access to underlying platform APIs unlike many higher-level cross-platform frameworks
- Terminal-first, gem-friendly workflow that fits naturally into existing Ruby tooling and CI
- Free Starter edition makes it easy to evaluate the full toolchain before paying
Cons
- Legacy product in maintenance mode — development has slowed dramatically and releases are infrequent
- Small, niche community compared to React Native, Flutter, or native toolchains, so fewer libraries and answers
- macOS host required for iOS builds, like all Apple-targeted toolchains
- Paid subscription model feels dated when major competitors (Flutter, React Native) are free and open source
- Risky choice for new long-term projects given uncertain future maintenance and roadmap
Key Features
Ruby for Native Apps
Write fully native iOS, Android, and macOS applications entirely in Ruby, compiled ahead-of-time to native machine code
Full Platform API Access
Direct access to the complete native APIs of each platform (UIKit, Android SDK, AppKit) from Ruby
Cross-Platform Codebase
Share Ruby business logic across iOS, Android, and macOS while keeping platform-specific UI where needed
Interactive REPL
Live console that lets you inspect and modify a running app on a device or simulator in real time
Terminal-Based Workflow
Build, run, and deploy from the command line using Rake tasks rather than a heavy proprietary IDE
RubyGems-Style Dependencies
Manage third-party libraries and native dependencies with a familiar gem and CocoaPods integration
Game API
Bundled cross-platform 2D game engine (motion-game) for building simple games in Ruby
App Store Deployment
Package and submit apps directly to the Apple App Store and Google Play
Pricing
- Full-featured toolchain
- Publish to the App Store and Google Play
- Latest iOS and Android only
- Adds a "Made with RubyMotion" launch message
- Community forum support
- Support for all platforms (iOS, Android, macOS)
- All OS versions, not just the latest
- Full software updates
- Community forum support
- Per-developer license
- Everything in Indie
- Private ticket support system
- Priority direct support
- Full software updates
- Per-developer license
Best For
Ruby Teams Going Mobile
Web shops with deep Ruby/Rails expertise who want to ship native mobile apps without hiring separate Swift/Kotlin developers
Native Apps Without Native Languages
Building production iOS, Android, or macOS apps that need full platform API access while staying in Ruby
Prototyping with the REPL
Rapidly experimenting on a live device using the interactive console to tweak UI and logic in real time
Simple Cross-Platform Games
Hobbyists using the bundled game API to build lightweight 2D games in Ruby across platforms
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