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README: expanded from the original terse list into categorized sections covering the six conjugation practice modes, textbook reader, AI chat and stories, listening/pronunciation, cloze, lyrics, vocab SRS, offline dictionary, grammar notes/exercises, and CloudKit sync. Architecture section now documents the dual local/cloud SwiftData stores with the App Group ID, the widget-schema-must-match requirement, and the Scripts/textbook extraction pipeline. app_features.md: added a full Conjuga section (practice modes, verb reference, grammar, dictionary, sync, widgets, data counts) alongside the existing ConjuGato and Conjuu ES analyses; added Conjuga as a first column in the comparison table with rows for the new capability axes (AI, textbook, speech, offline dictionary, lyrics, CloudKit, widgets); added a "Conjuga excels at" strengths section. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
4.6 KiB
4.6 KiB
Conjuga
A Spanish-learning iOS app that combines verb conjugation practice, a full textbook reader, an AI conversation partner, offline dictionary lookups, grammar exercises, and more. Runs entirely on-device where possible (Foundation Models, Speech framework, Vision OCR).
Features
Verb practice
- Six conjugation modes — flashcards, typing, multiple choice, handwriting (Apple Pencil / finger), sentence builder, and full-table (conjugate all persons at once)
- Focus modes — weak verbs (SM-2 spaced repetition), irregularity drills (spelling / stem / unique), common tenses
- 1,750 verbs across 5 levels (Basic → Expert) with 209 K pre-conjugated forms and 23 K irregular-span annotations
- 20 tenses — every indicative, subjunctive, conditional, and imperative tense, each with character-level irregular highlighting
- Irregularity filter — search the verb list by Any Irregular / Spelling Change / Stem Change / Unique Irregular, combinable with level filter
- Text-to-speech on any form
Content & study
- Textbook reader — 30 chapters of Complete Spanish Step-by-Step with 251 interactive exercises (keyboard + Apple Pencil), 931 OCR'd vocab tables rendered as Spanish→English grids (~3 100 paired cards extracted via bounding-box OCR)
- Course decks — weekly vocab decks with example sentences, week tests, and cumulative checkpoint exams
- Stem-change toggle on Week 4 flashcard decks (E-IE, E-I, O-UE, U-UE) showing inline present-tense conjugations
- Grammar guide — 20 tense guides with usage rules and examples + 20+ grammar topic notes (ser/estar, por/para, preterite/imperfect, etc.), each with 100+ practice exercises
- Grammar exercises — interactive quizzes for 5 core topics (ser/estar, por/para, preterite/imperfect, subjunctive, personal a)
AI & speech
- Conversational practice — on-device AI chat partner (Apple Foundation Models) with 10 scenario types; chat bubbles have tappable words that open dictionary / on-demand AI lookup
- AI short stories — generated stories with tappable words and comprehension quizzes
- Listening practice — listen-and-type + pronunciation scoring via the Speech framework
- Pronunciation check — word-by-word match scoring
Vocabulary & tools
- Offline dictionary — reverse index of 175 K verb forms + 200 common words, cached to disk for instant lookups
- Vocab SRS review — spaced repetition over course vocabulary with Again / Hard / Good / Easy rating
- Cloze practice — fill-in-the-blank sentences with distractor generation
- Lyrics practice — search, translate, and read Spanish song lyrics
Tracking & sync
- Progress — streaks, daily goals, accuracy stats, achievement badges, study-time tracking per day
- CloudKit sync — review progress, test results, saved stories, conversations, and textbook attempts sync across devices
- Widgets — combined dashboard + word-of-the-day, refreshed daily and on backgrounding
Architecture
- SwiftUI + SwiftData with a dual-store configuration:
- Local store (App Group
group.com.conjuga.app) — reference data: verbs, forms, irregular spans, tense guides, course decks, vocab cards, textbook chapters. Seeded from bundled JSON on first launch. Self-healing re-seeds trigger on version bumps or if rows are missing on disk. - Cloud store (CloudKit
iCloud.com.conjuga.app, private database) — user data: review cards, course reviews, user progress, test results, daily logs, saved songs, stories, conversations, textbook exercise attempts.
- Local store (App Group
- SharedModels Swift Package shared between the app and widget extension. Widget schema must include every local-store entity or SwiftData destructively migrates the shared store.
- Foundation Models for on-device AI generation (
@Generablestructs for typed output). - Vision framework for OCR of textbook pages and vocabulary images.
- Speech framework for recognition and pronunciation scoring.
- Textbook extraction pipeline (
Conjuga/Scripts/textbook/) — XHTML and answer-key parsers, macOS Vision image OCR + PDF page OCR, bounding-box vocab pair extractor, NSSpellChecker-based validator, and language-aware auto-fixer.
Requirements
- iOS 18+ (iOS 26 for Foundation Models features)
- Xcode 16+
Building
Open Conjuga/Conjuga.xcodeproj in Xcode and run on a simulator or device. Reference data seeds automatically on first launch. To regenerate textbook content, run Conjuga/Scripts/textbook/run_pipeline.sh locally — the generated textbook_data.json / textbook_vocab.json are committed so fresh clones build without the pipeline.