Sunkit Cash Tracker: Track the daily cost of anything you buy

Sunkit turns the price of a purchase into its daily cost. Enter what you paid and how long you'll use it — the app tracks daily cost, break-even progress, and milestones. Fully offline: no account, no network, no data collection. Free on the App Store.

Which Vercel product did you use? What new capability did it give your team, and how did that shape the product you launched?

Not applicable. Sunkit is a native iOS app built with SwiftUI and SwiftData. It is fully offline and does not use Vercel or any cloud deployment platform.

Hey Product Hunt! I built Sunkit because I kept judging purchases by their total price — and it was making me feel bad about things I actually used every day. A $300 pair of headphones feels expensive. But used daily for two years, it's about $0.41/day. That shift in perspective changed how I spend. So Sunkit does the math for you: enter what you paid and how long you'll use it, and it tracks daily cost and break-even progress over time. What I care about most: - It's fully offline — no account, no network requests, no data collection - It doesn't try to be a full budgeting app. It does one thing: daily cost and break-even I'd love feedback on two things: 1. Is the "daily cost" framing useful to you? 2. What would make you actually use this regularly? It's free on the App Store: [link] Thanks for checking it out!

Which Vercel product did you use? What new capability did it give your team, and how did that shape the product you launched?

Not applicable. Sunkit is a native iOS app built with SwiftUI and SwiftData. It is fully offline and does not use Vercel or any cloud deployment platform.