SubRadar
A subscription intelligence platform built end-to-end by TechZunction — connects to Gmail via OAuth to automatically detect every active subscription, tracks monthly spend across categories, and surfaces smart alerts for renewals, price increases, and forgotten subscriptions. Featuring an AI-powered Save Money engine that recommends cancellations, downgrades, and cheaper alternatives with one-tap Accept flow.
The Problem
Challenge
Most people have no idea how much they're spending on subscriptions — services auto-renew silently, trial periods expire unnoticed, and prices creep up without warning. Manually tracking subscriptions across streaming, productivity, cloud storage, and SaaS tools is tedious and error-prone. There was no product that combined automatic detection (from billing emails), real-time spend analytics, smart renewal reminders, and actionable money-saving recommendations in a single mobile-first experience.
Our Approach
Strategy
We built SubRadar as a mobile-first SaaS with Gmail as the intelligence engine. The Gmail OAuth integration uses read-only access to scan billing and receipt emails — detecting active subscriptions, amounts, billing cycles, and renewal dates automatically. On the backend, a NestJS API with Prisma on PostgreSQL stores subscription state, manages the alerts pipeline, and powers the Save Money engine. The dashboard surfaces four key metrics: monthly spend, active count, forgotten subscriptions (60+ days inactive), and pending alerts. A spending trend chart tracks the last 6 months by category (AI Tools, Streaming, Creative, Productivity). The Alerts system fires five distinct alert types: renewal reminders (7-day, 3-day, 1-day), free trial expiry warnings, and price change notifications (increase/decrease). The Save Money engine analyses usage patterns and costs to generate recommendations: cancel unused subs, switch to cheaper alternatives, downgrade plans — each with an Accept / Not Interested flow. Navigation follows a mobile-first bottom tab bar: Home, Subs, Alerts, Save, Gmail.
The Solution
Result
A production-ready subscription intelligence app with automated Gmail detection, real-time spend analytics, and a smart Save Money engine. Users connect Gmail once and SubRadar handles the rest — scanning billing emails, categorising spend, and firing timely alerts before any subscription renews or a free trial lapses. The Save Money engine surfaces personalised recommendations showing exact annual savings per action. The profile page shows lifetime stats: active subs, total monthly spend, and forgotten subscriptions. Deployed on Vercel via the TechZunction SDK with OTP-based authentication and a clean dark violet aesthetic.
Screenshots
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Live Demo
See It in Action
Full App Demo — Mobile
Key Metrics
Auto-Detected
Active Subs
Alert Types
Scan Time
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SubRadar
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