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A home screen widget on iOS is not a small version of your app. It is a separate process with its own hard memory ceiling, and the fastest way to find that ceiling is to cache a photo at the wrong size. Pulso, my watch collection app, now has six widget faces on the home screen, and most of the…

Pulso, my watch-collection app, has been iOS and web for months. This week it got a third platform, and the actual spec surprised me: Android didn't need to exist, it needed to agree. Five tabs, one set of decisions already made. Watches, Shortlist, Wear, Roadmap and Insights all had to read the same live API as iOS and reach the…

Turning a single-user app into a multi-user one is mostly not an authentication problem. Pulso, my watch collection tracker, had working accounts, magic-link sign-in and real sessions for days before I noticed that every route behind that login still read and wrote one shared file. The gate was real. Everything behind it was not. The practical version of that sentence:…