A scalable .NET SaaS platform built to run campaigns for thousands of concurrent users.
Referbi
Referbi is an affiliate marketing software that lets you run referral campaigns to get more customers and build brand loyalty.
Project overview
Referbi grew out of a problem Intobi kept running into: enterprise referral tools that worked well but were too costly and complex for smaller businesses. So Intobi built a leaner alternative from scratch – the same core referral-marketing functionality at a fraction of the cost and setup time. Built for simplicity, Referbi lets users launch a campaign in under 15 minutes and set up an account in about 10.
faster onboarding
50%
Client Context
Domain: Affiliate Marketing Software
Location: Ukraine
Timeline: Early 2022 – Ongoing
Team: Project Manager, Chief Technical Officer, Full-Stack Developer, Backend Developer, Frontend Developer, UX/UI Designer
Challenges
- Full rewrite required — the solution devised required substantial changes to the code, so Intobi invested in a complete rewrite of the processing from scratch.
- Reducing complexity without losing power — traditional referral tools involved intricate setup, complicated dashboards, and a need for technical support; the challenge was a platform that stayed robust yet straightforward to operate.
- Affordability at scale — enterprise-level referral tools typically start at $2,000/month, out of reach for most small businesses; Referbi needed similar functionality (campaign management, analytics, integrations) at a far lower price point.
- Flexible campaign configuration — businesses need to test different campaign structures (multi-use vs. single-use codes, varying reward triggers, custom redirects) without getting lost in configuration details.
Tech stack
Backend
Frontend
Delivery Approach
Referbi began as Intobi’s own answer to a problem it kept seeing — enterprise referral tools that were powerful but too costly and complex for smaller businesses. Intobi built the platform from scratch, phase by phase, with simplicity and affordability in mind.
Discovery
The idea took shape after integrating an enterprise tool for a client and finding it effective but overbuilt for smaller businesses. Intobi defined a leaner alternative, the same core referral functionality at a fraction of the cost and setup time, and assembled a dedicated team in early 2022 to build it.
O
Oleksandr
Project Manager
Architecture
Intobi architected a scalable SaaS platform on C#/.NET, built to handle thousands of concurrent users while keeping campaign creation, code management, and analytics simple enough for non-technical business owners.
R
Rostyslav
Chief Technical Officer
Backend
On C# and .NET, backend development delivered the campaign engine – single- and multi-use code management, reward triggers and custom redirects, custom-domain email, and analytics- with integrations for SendGrid and Klaviyo (email), Stripe (payments), AWS S3 (storage), Cloudflare (performance and security), and Horoshop for extended e-commerce support.
D
Danylo
Backend Developer
Frontend
With Angular, Intobi built an intuitive interface centered on a campaign setup wizard, so businesses can launch a referral campaign in under 15 minutes and set up an account in about 10 — no technical support required.
I
Ivan
Frontend Developer
Testing
Intobi validated the platform for simplicity and scale, refining it through the Shopify App Store review process to a successful listing on the third submission, delivering a 50% reduction in onboarding time and an average 30% ROI increase for users within their first campaign cycle.
A
Andrii
Full-Stack Developer
Ready to bring an affordable, easy-to-launch referral program to your own customers?
Contact usKey features
A comprehensive SaaS platform for referral marketing
Referbi’s intuitive campaign setup wizard lets businesses create referral campaigns in a few clicks, minimizing time investment and lowering the barrier to entry. Users can control how pop-ups appear on their sites, choose reward triggers, and customize redirects, while robust code management supports single-use or multi-use codes and usage limits. Reusable, personalizable email templates — sendable from custom domains — help businesses keep communication on-brand, and built-in analytics and reporting offer deep insight into campaign performance.
E-commerce integrations for Shopify and AppSumo
Referbi’s Shopify and WooCommerce plugins let users manage referral campaigns from within their existing e-commerce dashboards, eliminating the need for multiple logins and giving a cohesive experience for tracking leads, managing codes, and configuring campaigns in one place.
Enhanced UI/UX design
Since Referbi’s goal was an easy-to-use platform, Intobi’s team ensured that even non-technical users could configure and manage referral campaigns without a complex interface — simple, user-friendly software that saves time and effort while helping businesses get the most out of the platform.
Numerous integrated services for enhanced functionality
To round out Referbi’s functionality, Intobi integrated SendGrid and Klaviyo for personalized email marketing and automation, plus API access, lead management, and Google Analytics support for data-driven decisions. AWS S3 handles secure file storage, Cloudflare improves site performance and security, Horoshop expands e-commerce support, and Stripe streamlines payment processing.
Results
Referbi’s user-centric design and affordable pricing delivered measurable gains for small and medium-sized businesses – with seamless Shopify and WooCommerce integration, running referral campaigns from a single dashboard, and a .NET backend built to handle thousands of concurrent users, plus advanced reporting and real-time analytics as they scale.
faster onboarding
50%
higher ROI
30%
What client said
Oleksandra Pomazan, CMO
Software Engineering Company
“Their technical expertise, proactive support, and a genuinely collaborative mindset set them apart. Intobi's developers helped the client reduce the average feature development time by 25%. The team delivered on time, stayed within budget, and demonstrated excellent project management skills. Their adaptability, proactiveness, and technical expertise impressed the client.”
Related Services
A setup wizard and clean dashboards that let non-technical owners launch campaigns in minutes.
A responsive Angular web app engineered for speed, clarity, and reliable campaign management.
What e-commerce platforms does Referbi integrate with?
The case describes native Shopify and WooCommerce plugins that let merchants manage referral campaigns from within their existing store dashboards, plus a Shopify App Store listing achieved on Intobi’s third submission.
How quickly can a business launch a campaign on Referbi?
The case describes an intuitive setup wizard that lets businesses create a referral campaign in a few clicks, with account setup taking about 10 minutes and onboarding time cut by 50% overall.
What integrations does Referbi offer for marketing and payments?
The case describes integrations with SendGrid and Klaviyo for email marketing, Stripe for payments, AWS S3 for file storage, Cloudflare for performance and security, and Google Analytics for reporting.
Can businesses run different types of referral campaigns?
Yes, the case describes flexible configuration, including single-use and multi-use codes with usage limits, customizable reward triggers, custom redirects, and pop-up controls, so businesses can test different campaign structures without getting lost in setup.