Show HN: Cardly – Manage, track, and get alerts for your gift card balances

Hi HN, I’m Zachary from New Zealand.

I built Cardly because I kept finding expired gift cards in my drawer and losing track of the balances on the ones I did use. I wanted a simple, clean place to organize them all so I’d actually spend the money I had.

It’s a Next.js app built with TypeScript and Tailwind CSS, using Supabase for the backend.

The core features are:

- Manual Tracking (Free): A generous free tier to track balances, expiration dates, and visualize spending with progress bars. - Auto-Tracking (Premium): We're rolling out automatic balance checks for premium users. - Organization: Sorting, filtering, and color-coded expiration alerts. - Dark Mode: Just shipped this!

I’d love to hear your feedback on the UI or any features you think are missing. Thanks for checking it out!