The universal referral engine for B2B SaaS
The complete referral platform for SaaS. Launch and manage automated referral tracking natively inside your web and mobile apps with our referral API and drop-in SDKs. A powerful B2B referral software built for developers.
Everything you need to make growth viral
GrowthRail bundles the SDKs, UI, attribution, anti-fraud, webhooks, and analytics so your team can launch in minutes not months.
Four steps from zero to a live program
GrowthRail handles the plumbing—codes, attribution, retries, anti-fraud—so your team only writes the parts that are specific to your product.
Install the SDK
Drop in @growth-rail/react, @growth-rail/react-native, or @growth-rail/core. Provider takes a project secret and an optional user ID — that's it.
Configure your campaign
Pick theme color, button style, modal copy, and new-user banner from the dashboard. Live-preview on web and mobile.
Track referrals and rewards
Referral codes (or device fingerprints) match new users to their referrer. Call trackRewardEvent('purchase') when someone qualifies.
Receive signed webhooks
GrowthRail fires referral.converted to your URL with a Bearer secret. You drop a credit, fire a payout, or anything else.
Launch in minutes with our Referral SDK & API
Drop-in UI components, React hooks, and native referral SDKs mean your engineering team can integrate a world-class developer referral software with just a few lines of code.
A control room for your growth loop
Every knob your program needs in one place — campaigns, users, webhooks, analytics, and API keys. Project-scoped, organization-aware, role-clean.
Overview
Acme Referrals · last 30 days
Referral conversions
Automate rewards instantly without manual work
When a referral converts, GrowthRail automatically notifies your system to issue the reward. With built-in retries and delivery logs, you never have to manually credit a user again.
The shape of growth, whatever you ship
The same engine adapts to subscription products, consumer apps, marketplaces, and partner programs. Configure campaigns and reward events to match your funnel.
Give & get for subscription products
Reward referrers with a free month, referees with a discount. Trigger from plan_upgraded events. Stripe credits via webhook.
Referral codes that survive App Store installs
Probabilistic device matching attributes installs even when the deep-link payload is lost. Banner welcomes the referred user on first open.
Tiered referral payouts with audit trails
Anti-fraud allow/block lists per project. Each conversion writes an immutable tracking record. Replay any payout webhook from the dashboard.
Refer-a-seller / refer-a-buyer programs
Separate campaigns per project keep buyer and seller funnels isolated. Custom event names like first_listing or first_purchase reward the right moment.
Multi-org with per-workspace branding
Custom theme color, copy, modal vs drawer per project. Live preview before publishing. No code redeploy to retheme.
Partner / affiliate motion in the same engine
Long-lived API keys with expiry presets and revoke. Server-to-server referral creation. Custom attributes capture partner segment.
Loved by engineers and growth teams
See what our customers are saying about building with GrowthRail.
"Getting users to invite their network used to be a challenge. With GrowthRail, the referral loop is frictionless and drives massive organic signups."
"The ability to customize payouts based on user actions means we only pay for high-quality referrals. It's transformed our growth strategy."
"We went from struggling with custom referral logic to having a fully automated, scalable partner program that brings in hundreds of new users daily."
"Getting users to invite their network used to be a challenge. With GrowthRail, the referral loop is frictionless and drives massive organic signups."
"The ability to customize payouts based on user actions means we only pay for high-quality referrals. It's transformed our growth strategy."
"We went from struggling with custom referral logic to having a fully automated, scalable partner program that brings in hundreds of new users daily."
"Getting users to invite their network used to be a challenge. With GrowthRail, the referral loop is frictionless and drives massive organic signups."
"The ability to customize payouts based on user actions means we only pay for high-quality referrals. It's transformed our growth strategy."
"We went from struggling with custom referral logic to having a fully automated, scalable partner program that brings in hundreds of new users daily."
"Getting users to invite their network used to be a challenge. With GrowthRail, the referral loop is frictionless and drives massive organic signups."
"The ability to customize payouts based on user actions means we only pay for high-quality referrals. It's transformed our growth strategy."
"We went from struggling with custom referral logic to having a fully automated, scalable partner program that brings in hundreds of new users daily."
Common questions
If something isn't covered here, ping hello@growthrail.com — early-access teams get direct Slack access to engineering.
Which platforms do you support?
How is referral attribution handled across web and mobile?
Do I have to build the share UI myself?
What about fraud and double-claiming?
How do rewards get delivered?
Is there a hosted dashboard or do I build my own?
Can I run multiple referral programs?
What's the pricing model?
Ship a referral program today, not next month.
Join product and growth teams piloting GrowthRail. Free during early access, no credit card required.