The feature flag platform built for Ruby and Rails. Progressive rollouts, environment inheritance, audit logs, and powerful analytics — so you can ship faster without the stress.
# Simple feature checks
if Flagstack.enabled?(:new_checkout_flow)
render_new_checkout
end
# Actor-based rollouts
if Flagstack.enabled?(:beta_features, current_user)
show_beta_banner
end# Simple feature checks
if Flipper.enabled?(:new_checkout_flow)
render_new_checkout
end
# Actor-based rollouts
if Flipper.enabled?(:beta_features, current_user)
show_beta_banner
endNot another generic feature flag service
Already using Flipper? Keep your existing code. Flagstack syncs with your app and works with both APIs.
Production, staging, development — flags cascade down with override support. Personal dev environments for each team member.
Every change is logged with who, what, when. One-click rollback to any previous state.
See how your flags are performing with real-time evaluation metrics and historical trends.
Join the beta. Free during early access, no credit card required.
What we're building next
Gradually roll out features to a percentage of users with automatic ramp-up.
PR-style approval workflow for production flag changes.
Get notified when flags change. Integrate with your workflow.
See exactly where each flag is used in your codebase.