金刚经 · Diamond Sutra

A native iOS/iPadOS reader for the 《金刚般若波罗蜜经》 (Diamond Sutra, Kumārajīva translation), built with SwiftUI. It presents the complete scripture across all 32 chapters (分) with chapter-by-chapter and full-text reading, Mandarin text-to-speech with live sentence highlighting, and an adjustable, comfortable reading experience — fully offline.

📲 Download on the App Store

Features

• 📖 Complete scripture — all 32 分, from「法会因由分第一」to「应化非真分第三十二」.
• 📜 Two reading modes — per-chapter reader, or a continuous full-text scroll of the whole sutra.
• 🔍 Full-text search — search across all 32 分, with matches highlighted and tap-to-jump to the chapter.
• 🔊 Read-aloud (TTS) — Mandarin recitation via Apple's on-device AVSpeechSynthesizer, with the currently-spoken sentence highlighted live and adjustable speed (慢 / 正常 / 快).
• 📿 Recitation counter (持诵) — an interactive tap counter with haptics, daily + lifetime totals, and a configurable daily target (21 / 49 / 108 / 1080).
• 🔖 Bookmarks (收藏) — save chapters for quick return; swipe to remove.
• 📊 Reading progress — per-chapter read tracking with a progress ring and "continue reading".
• ☀️ Verse of the day (每日一偈) — a daily famous line, with an optional daily local-notification reminder.
• 📤 Share — share any chapter's text via the system share sheet.
• 🔠 Adjustable text size — scale the body type up or down; the preference persists.
• 🌙 Light & dark mode — a warm "sutra paper" theme via Asset Catalog color tokens.
• 📡 Fully offline — all text is bundled in the app; no network, no account, no data collected.
• 📱 Universal — adapts to both iPhone and iPad.

Screens

The app uses a five-tab layout:

经文 (Read)	持诵 (Recite)	收藏 (Bookmarks)	设置 (Settings)	关于 (About)
Daily verse, progress ring, search, 32-chapter list	Tap counter with daily / lifetime totals + target	Saved chapters	Font size, speech speed, daily reminder	App info, developer, feedback, version

Tech stack

• Swift 5 · SwiftUI (declarative UI, TabView + NavigationStack, .searchable, ShareLink)
• AVFoundation — AVSpeechSynthesizer for Mandarin text-to-speech
• UserNotifications — opt-in daily local-notification reminder (每日一偈)
• UserDefaults — persists bookmarks, reading progress, recitation counts and preferences
• XcodeGen — project generated from project.yml
• Deployment target iOS 17+, universal (iPhone + iPad)

Project structure

project.yml                 # XcodeGen project definition
Sources/
  JingangJingApp.swift      # @main app entry (injects AppStore, refreshes reminder)
  MainTabView.swift         # root TabView: 经文 / 持诵 / 收藏 / 设置 / 关于
  AppStore.swift            # persisted state: bookmarks, progress, recitation counter, reminder
  SutraData.swift           # full text of all 32 分 + search + verse-of-the-day
  SutraHomeView.swift       # daily verse, progress ring, full-text search, chapter list
  ChapterDetailView.swift   # per-chapter reader (TTS + highlight + font + bookmark + share)
  FullTextView.swift        # continuous full-sutra reading
  ReciteView.swift          # 持诵 recitation counter (daily/lifetime totals + target)
  BookmarksView.swift       # 收藏 saved chapters
  SettingsView.swift        # 设置 font / speed / daily reminder / progress reset
  SpeechManager.swift       # AVSpeechSynthesizer wrapper
  NotificationManager.swift # daily verse local-notification scheduling
  FeedbackView.swift        # WhatsApp feedback form (reached from About)
  AboutView.swift           # app / developer / feedback / version
  Theme.swift               # central color tokens
Resources/
  Info.plist
  Assets.xcassets           # AppIcon + theme color sets

Building

Requires Xcode 16+ and XcodeGen (brew install xcodegen).

xcodegen generate
open JingangJing.xcodeproj
# or build from the command line:
xcodebuild -project JingangJing.xcodeproj -scheme JingangJing \
  -destination 'platform=iOS Simulator,name=iPhone 17 Pro' build

The Xcode project is generated from project.yml and is not checked in — run xcodegen generate after cloning.

Acknowledgements

• Scripture: 《金刚般若波罗蜜经》, 姚秦三藏法师 鸠摩罗什 译 (public domain).
• Developed by Tertiary Infotech Academy Pte Ltd — tertiaryinfotech.com

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一切有为法，如梦幻泡影，如露亦如电，应作如是观。