Essays from the founder on building CardCue Pro , the small, quiet, private wallet that helps you make better micro-money decisions about the money hiding in your junk drawer. Stories behind the work, lessons that cost weeks, features that got cut, and principles that survived.
Most of what makes a product good is the thing you didn't ship. A budget tracker, a receipt scanner, a marketplace, a social feed, all individually good ideas, all cut, and the test that told me which to keep: does the feature build trust, or spend it?
RetrospectiveFour things I was confidently wrong about. I thought the app's job was to show cards (it's to remember them). I thought onboarding was about teaching (it's about demonstrating). I thought notifications were about value (they're about quiet). I thought Swift would be the hardest part.
VoiceEvery app is a voice in your day, whether it wants to be or not. Most apps have picked the default voice of their framework, or of legal, or of nobody. On picking a voice, the thousand rejections behind one good sentence, and the off switch that's the same respect as the voice itself.
Deep-diveSix months into building, the API bill. A few pennies per scan, spread across a user base scanning 30 cards in onboarding, is a few dollars per user in cloud costs. Then iOS 18.1 shipped. FoundationModels made the whole scanning pipeline on-device, free, and silent. The new economics of a privacy-first app.
CraftI spent three months on a corner radius. Not drawing circles, rendering it in every context, living with it, discovering on day 11 that the Watch one was off. The real function of a design system isn't documentation or brand. It's resistance to drift.
EssayA hundred and forty-seven pickups a week. Ambient apps, Apple's second layer, and the locked phone on the kitchen counter, the real design prompt for any utility app worth building. You increase product quality by decreasing product surface.
EssayThe longest you should spend inside CardCue Pro on any given day is thirty seconds. The app is great to the extent that it evaporates at the register. An apparatus for the ordinary moment of paying, you, a barista, a coffee, and the phone already back in your pocket.
PrincipleSeventeen sign-ins in a single day. Does a gift card app need to know who you are? The honest answer is no. No accounts, no sign-up, no OAuth, no magic links. The design cost of saying no, and the dangerous version that most apps ship instead.
EssayThe last notification that was right, a Starbucks card, a rainy Tuesday, a single line on a lock screen. An app at war with the default: five gates, twelve signals, and a year of silence to earn the banner. The right notification is worth a hundred wrong ones.
StoryA $50 Target card in a drawer, clipped to a birthday card from Aunt Jean, 2021. The real shape of the $3 billion unused-gift-card number, and the five-step chain that has to land for any card to survive it. The origin story of the app.
We post the next story when it's ready. Not on a calendar. Pick whichever channel below you actually check, we're everywhere, but we're not loud.
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