description: "How I built a privacy-first iOS app for BJD doll enthusiasts using SwiftUI, CoreData, and local notifications." published: false tags: swiftui, ios, indiedev, appdev cover_image: /assets/bjd-cover.jpg As an iOS developer and BJD (Ball-Jointed Doll) collector, I found myself managing my growing doll collection with spreadsheets, random notes, and calendar reminders. It was messy. So I built BJD Doll Archive — a dedicated app that understands the specific needs of BJD collectors. The Problem BJD collecting involves a lot of tracking: Doll details : brand, sculpt, model, face-up artist, purchase date Care schedules : MSC coating refreshes, stain checks, light protection Vendor experiences : which face-up artists deliver quality work, which shops are reliable Photos : documenting customization progress Generic inventory apps don't understand BJD-specific concepts like "face-up refresh cycle" or "resin yellowing prevention." The Solution: SwiftUI + Local-First Architecture SwiftUI for Rapid UI…