Ruby 4 with Bundler built in
Run Rails, Sinatra, or your Ruby scripts. Gems from your Gemfile are installed before the app starts, with no setup.
From R$12.49/mo ≈ $2.25
What comes ready
The environment already knows your language: you upload the code and it runs.
YJIT, Ruby's own JIT
Ruby's built-in just-in-time compiler, which Rails enables by default, speeds up long-running apps.
Automatic Bundler
Detects your Gemfile and installs gems before the app starts.
Rails, Sinatra, Hanami, Roda, and Grape
Ruby's main web frameworks run with no special adaptation.
Sidekiq and workers
Set your start command through START and run Sidekiq or any other worker.
What you can host
Projects that run on this runtime.
Rails apps with Hotwire
Full-stack or API-mode applications with Turbo, Stimulus, and import maps.
Lightweight APIs with Sinatra and Roda
Lean Ruby microservices with little code and simple deploys.
Discord bots with discordrb
Ruby bots with auto-restart and real-time logs in the dashboard.
Sidekiq and Resque workers
Async processing with Redis-backed queues and automatic retries when a job fails.
Scrapers and web automation
Data collection with Mechanize, Nokogiri, HTTParty, or Watir in automated routines.
E-commerce with Spree and Solidus
Open-source Ruby storefronts with customizable checkout and payment gateway integrations.
Configuration and versions
The dashboard generates squarecloud.app at deploy, or you write your own at the project root: name, main file, memory and version in one place.
DISPLAY_NAME=Ruby
MAIN=app.rb
MEMORY=512
VERSION=recommended- Versions
4- Accepted files
.rb- Dependencies
Gemfile- RUNTIME= values
ruby
Combine with other services
Everything in the same dashboard, on the same infrastructure and the same invoice.
A plan for every stage of your project
Start small and scale when you need to, with no loyalty contracts.
Hobby
To validate ideas, bots and personal projects
From R$12.49/mo ≈ $2.25
- 1 GB RAM
- 1 vCPU
- Up to 4 projects
- Scales up to 2 GB on the same plan
Standard
RecommendedFor production, with databases and custom domains
From R$44.99/mo ≈ $8.10
- 4 GB RAM
- 4 vCPU
- Up to 16 projects
- Scales up to 8 GB on the same plan
Pro
For high scale, with daily application snapshots and advanced analytics
From R$124.99/mo ≈ $22.50
- 12 GB RAM
- 6 vCPU
- Up to 48 projects
- Scales up to 24 GB on the same plan
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Frequently asked questions about Ruby Hosting
Ruby 4, YJIT, Bundler, and Rails.
Is YJIT enabled by default?
Yes. Apps on Ruby 4 run with YJIT enabled.
How do I configure Rails or Puma?
Use START=bundle exec puma -C config/puma.rb in squarecloud.app. Bundler resolves gems automatically before start.
Can I use Sidekiq?
Yes. Run your main app with a subdomain and a separate background app for Sidekiq, or both in the same process via the Puma plugin.
Which exact Ruby version runs?
Ruby 4, with security patches applied automatically. We only keep major 4, with no older majors in parallel, which speeds up security patches and keeps the platform simple.