YJIT enabled
Apps up to 30% faster than previous Ruby versions.
Ruby 4 with Bundler built-in
Run Sinatra, Rails, or your favorite scripts. YJIT enabled — apps up to 30% faster.
Why run on Square Cloud
Everything optimized, production-ready.
Automatic Bundler
Detects Gemfile and installs gems before start.
Rails, Sinatra, Hanami, Roda, Grape
All major frameworks supported.
Sidekiq and workers
Native background processing, configurable via START=.
Ideal use cases
Where this runtime shines on our platform.
Rails 7 and Hotwire web apps
Full-stack or API-mode hosting with Turbo, Stimulus, and import maps in production.
Lightweight APIs with Sinatra and Roda
Minimal Ruby microservices with superior performance, simple deploys, and low overhead.
Discord bots with discordrb
Ruby bot hosting with auto-restart, real-time logs, and gem management.
Sidekiq and Resque workers
Robust async processing with Redis, smart retries, and monitoring dashboards in production.
Scrapers and web automation
Data collection with mechanize, nokogiri, httparty, and Watir in automated workflows.
E-commerce with Spree and Solidus
Open-source Ruby e-commerce platforms with customizable checkout and integrated payment gateways.
Available versions
Pick the track that best fits your project.
Current version
4
Single stable toolchain
Technical specs
Everything you need to configure your app.
- Accepted extensions
.rb- Dependency file
Gemfile- RUNTIME= aliases
ruby
Minimal config
Create a squarecloud.app file at your project root:
squarecloud.appRuby
MEMORY=512
DISPLAY_NAME=Meu App
VERSION=recommended
MAIN=app.rbA plan for every stage of your project
Start small and scale when you need to, with no loyalty contracts.
Tier 3ISO 27001SOC 2 Type IIAlways-On DDoS Protection
Explore our infrastructureFrequently asked questions about Ruby Hosting
Ruby 4, YJIT, Bundler, and Rails.