All Ideas
All Startup Ideas
Fintech~8 hours to build

Subscription Tracker

Stop bleeding money on subscriptions you forgot about.

The Problem

The average person has 12+ active subscriptions and wastes $133/month on services they don't use. Free trials convert to paid, annual renewals sneak up, and that $9.99/month gym app you used twice keeps charging. People don't know what they're paying for.

The Solution

A simple app where you add your subscriptions (or auto-detect from bank/email), see your monthly spend, get reminders before renewals, and identify subscriptions to cancel. Privacy-focused—no bank linking required.

How it works:

1

Add subscriptions

Manual or import from email

2

Track spending

See monthly/yearly totals

3

Get alerts

Before renewals hit

Market Research

Subscription fatigue is real. Apps like Rocket Money (formerly Truebill) make millions helping people manage subscriptions. There's room for simpler, privacy-focused alternatives.

  • Rocket Money acquired for $1.2B—massive market validation
  • Americans spend $219B/year on subscriptions (West Monroe)
  • 84% of people underestimate their subscription spending

AI Prompts to Build This

Copy and paste into Cursor or Claude.

1. Project Setup

Create a Next.js PWA for a Subscription Tracker. Features: - Dashboard: total monthly spend, upcoming renewals, subscription list - Add subscription: service picker with logos, custom amount, billing cycle - Calendar view of renewals - Categories: Entertainment, Productivity, Health, etc. Store data locally (privacy-first) with optional cloud sync via Supabase auth. Include common services database with logos/icons.

2. Smart Features

Add intelligent features: 1. Email parser: User forwards subscription emails, AI extracts service + price + renewal date 2. "Haven't used in 30 days" flag for app subscriptions 3. Annual vs monthly comparison: "Switch to annual and save $X" 4. Price increase detection: "Spotify went from $9.99 to $11.99" 5. Free trial countdown: Days left before conversion Use Claude to parse unstructured email data into structured subscription info.

3. Notifications

Implement notification system: - Push notification X days before renewal (user configurable: 3, 7, 14 days) - Monthly summary email: "You spent $X on Y subscriptions" - Alert when subscription price changes - Free trial ending reminders For PWA, use Web Push API. For email, use Resend or similar. Let users snooze or dismiss reminders.

Want me to build this for you?

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