BrightDigit was created with the idea that great apps are made by thinking ahead. Founded in 2012 by Leo Dion, a software developer with over 20 years’ experience, BrightDigit has focused on building high-quality apps for Apple devices. We specialize in building apps using Swift and exploring all the new opportunities in the growing Apple software market.
MistKit’s type-safe CloudKit REST client proved in production with CLI updaters for Celestra and Bushel. Covers query filters, batch modifyRecords, protocol-based mapping and references. Lessons: 200 ops/request so chunk, booleans as INT64, server-to-server auth OK. AI excels at test gen; humans guide architecture.
Rebuild of MistKit using Claude Code + swift-openapi-generator: turn CloudKit docs into an OpenAPI spec to generate a type-safe client. Handle polymorphic fields via typeOverrides/CustomFieldValue, auth with ClientMiddleware (API/WebAuth/Server-to-Server), structured error mapping, and a clean Swift wrapper API.
SwiftSyntax makes macro code generation verbose. The author builds SyntaxKit, a Swift package/DSL with result builders to generate Swift via SwiftSyntax, using Cursor and Claude. Covers workflow tips, unit tests, CI with GitHub Actions. Takeaway: readable, type-safe codegen.
swift-build is a composite GitHub Action that removes Swift CI/CD boilerplate. It runs SPM or xcodebuild across Ubuntu and Apple platforms with matrix testing (Swift/Xcode/devices) and intelligent caching (irgaly/xcode-cache, actions/cache), optional simulator downloads.
Decision guide for local persistence: SwiftData vs Core Data/SQLite. Explains Apple API pros/cons, docs gaps, and abstraction friction. Recommends SwiftData for greenfield SwiftUI (iOS 17+), but warns about @Query/macro and Swift 6 issues; use ModelActor or GRDB when needed.
watchOS Simulator lacks Sign in with Apple. Implement a debug‑only file‑based login: server writes a token into the watch app’s tmp container via SimulatorServices/simctl; the app polls with Combine (Timer.publish + async filter) in a SimulatorLoginButton, validates, then persists. Clean up temp files.
How to add Sign in with Apple end‑to‑end: set up the capability, verify Apple JWTs on the server using JWTKit (Apple JWKS) with Vapor/Hummingbird/OpenAPI, and wire SignInWithAppleButton in SwiftUI to send credentials. Includes audience/issuer checks, Keychain storage, and error handling.
Case study: evolving a heart‑rate streaming prototype into gBeat, a full‑stack fitness platform built with Server‑Side Swift (Vapor). Covers SPM code sharing, HealthKit input, WebSockets, push notifications, and an architecture with server auth/streaming and client sync.
Apple dev year-in-review: hiring was tough; Vision Pro and Apple Intelligence underwhelmed; SwiftUI interest surged; Swift 6 emphasized thread safety. New OSS: DataThespian (SwiftData + actors), RadiantKit, BushelKit, PackageDSL. 2025: smaller apps, Bushel, WWDC-timed content.
Type‑safe CRUD for SwiftData ModelActor via a Queryable protocol and Selector enums. Implements insert/fetch/delete/save with withModelContext and convenience/throwing updates. Caveat: new models get temporary IDs—save, then query again by a unique field.