Offer App — Launch a Full Offers, Coupons & Cashback Platform Across Web, Mobile, and Admin

A complete, production-grade offers, coupons, and cashback platform designed for regional rewards marketplaces. Ships as a pnpm + Turborepo monorepo with a NestJS API, a consumer-facing Next.js web app, separate admin and merchant portals, an Expo React Native mobile app, and shared packages for typed API access. Built for founders who want to launch a Honey, Rakuten, or Cashrewards competitor in weeks instead of years.

Why you need this MVP

Cashback and coupon platforms are a proven, high-revenue affiliate model. Honey sold to PayPal for $4 billion. Rakuten is a multi-billion-dollar business. Cashrewards owns the Australian market. The business model is straightforward: aggregate merchant offers, drive traffic to merchant stores, collect affiliate commissions, share a portion with users as cashback, keep the rest.

The hard part is the platform itself. You need a consumer web app, a mobile app, an admin panel for moderation, a merchant portal for self-service, an affiliate tracking and redirect engine, a wallet for cashback, payouts, referrals, notifications, and a backend that ties it all together. Building this from scratch is a 12 to 24 month engineering project.

This MVP gives you the entire platform in one repo. Frontend, backend, admin, merchant tools, mobile, and shared packages — all wired together and ready to brand.

Key benefits

• Five surfaces in one monorepo. Consumer web, mobile, admin, merchant portal, and shared packages.
• Affiliate tracking built in. Tracked redirects, coupon copy tracking, and intent capture already wired.
• Cashback engine. Activation, wallet, payouts, and referrals all scaffolded.
• Merchant self-service. Onboarding and offer management portal included.
• Admin moderation. Review and approve offers, users, support, monetization, and risk surfaces.
• Mobile-first discovery. Expo Router, TanStack Query, and typed API access on day one.
• Sponsored listings and premium tiers. Monetization surfaces already in the codebase.
• Notifications. Wishlist, deal alerts, and engagement loops built in.
• Production-grade backend. NestJS with Fastify, Prisma, PostgreSQL, Redis, and Swagger docs.

How to make money with it

• Launch a regional cashback platform for a specific country or vertical (NZ, Australia, UK, fashion, electronics, travel).
• Build a coupon discovery site earning affiliate commissions on every redirect.
• Operate a curated deals marketplace for indie brands and small merchants.
• Run a sponsored listings business charging merchants for premium placement.
• Build a B2B rewards platform for corporate teams and employee benefits.
• Sell merchant onboarding tools as a SaaS layer on top of the platform.
• Layer in premium subscription tiers for higher cashback rates or exclusive deals.
• Build a niche rewards brand for a specific community (parents, students, gamers, frequent travelers).
• License the entire platform to industry associations or loyalty program operators.
• Sell branded cashback wallets to fintech and banking apps as a partnership product.

How you can use it

• Indie SaaS founders launching a cashback or coupon platform
• Affiliate marketers scaling beyond a single niche site
• Loyalty program operators building their own infrastructure
• Regional marketplace founders competing with global incumbents on local merchants
• Niche community founders monetizing audiences with rewards
• Fintech and banking startups layering cashback on top of card programs
• Retail consortiums building shared loyalty platforms
• Agencies building white-label rewards platforms for clients
• Corporate benefits providers offering rewards to employee teams

How it boosts your productivity

You skip the most painful 12 to 24 months of any rewards platform: the multi-surface architecture, the affiliate tracking engine, the cashback wallet, and the merchant portal.

• Skip a year of architecture work. All five surfaces are already wired and shipping.
• Affiliate engine ready. Tracked redirects, coupon copy, and intent capture work on day one.
• Cashback wallet built. Activation, balance, payouts, and referrals scaffolded.
• Merchant onboarding ready. Self-service portal already in the codebase.
• Admin tools built. Moderation, support, and risk surfaces ready to extend.
• Mobile-first. Expo app with typed API access for instant cross-platform shipping.
• Backend production-grade. NestJS, Prisma, PostgreSQL, Redis, and Swagger documentation included.
• Type-safe API contracts. Shared packages mean web, mobile, and admin all stay in sync.

For a founder, this is the difference between launching a real platform and writing a one-page MVP.

What is included

• NestJS API with Fastify adapter, Prisma, PostgreSQL, Redis, and Swagger docs
• Next.js 16 consumer web app for offer browsing, redirects, wishlist, wallet, cashback, and premium views
• Next.js admin portal for offer review, user moderation, support, monetization, and risk
• Next.js merchant portal for self-service onboarding and offer management
• Expo React Native mobile app with Expo Router, typed API access, and TanStack Query
• Shared packages for typed API client and DTOs across all surfaces
• Affiliate tracking layer with tracked redirects, coupon copy, and intent capture
• Cashback wallet with activation, payouts, and referrals
• Notifications and wishlist flows
• Sponsored listings and premium subscription surfaces
• Auth, RBAC, and merchant-aware permissions

Tech stack at a glance

• Languages: TypeScript end to end
• Backend: NestJS, Fastify, Prisma, PostgreSQL, Redis, Swagger
• Web: Next.js 16, React 19 (consumer + admin + merchant portals)
• Mobile: React Native (Expo 55), Expo Router, TanStack Query
• Build: pnpm, Turborepo
• Testing: Jest

Ideal for founders building a cashback platform, coupon discovery site, affiliate rewards marketplace, regional Honey or Rakuten competitor, B2B rewards SaaS, or niche loyalty program that needs consumer, mobile, admin, and merchant surfaces in one codebase.