# llms-full.txt for lockcard.app
# Generated: 2026-03-25
# Last Updated: 2026-03-25
# Purpose: Comprehensive documentation for AI deep analysis
# Based on Lockcard Business Plan v2.0 (March 2026)

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## 1. PRODUCT OVERVIEW

### 1.1 What is Lockcard?

Lockcard is a vocabulary builder Chrome extension + iOS app that helps users save and master words from real content. With the Chrome extension, click any word in YouTube subtitles or web articles to save it instantly. Words sync to the iOS app, where spaced repetition flashcards, home screen widgets, and AI-generated podcasts help you review throughout the day.

**Mission**: Discover Words, Discover Worlds

**Vision**: Become the world's leading language learning platform through AI-powered, context-based vocabulary acquisition

### 1.2 Core Philosophy

Unlike traditional flashcard apps, Lockcard preserves the original context of every word you save, making vocabulary stick through natural usage patterns. Research shows that contextual learning improves vocabulary retention by 3x compared to studying isolated word lists.

**The Learning Loop**:
1. **Discover**: Encounter new words while watching YouTube videos, reading articles, or using AI apps
2. **Capture**: Save words with one click, automatically preserving context
3. **Personalize**: Add your own definitions, example sentences, and notes
4. **Review**: Practice via notifications, widgets, or AI podcasts throughout the day
5. **Master**: Transform passive recognition into active vocabulary

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## 2. DETAILED FEATURES

### 2.1 Chrome Extension (Discovery Engine)

**Core Capabilities**:
- **YouTube Subtitle Integration**: Click any word in video subtitles; video auto-pauses for seamless learning
- **Web Page Word Lookup**: Instant definitions on any webpage with one-click save
- **Context-Aware Saving**: Automatically preserves original sentence, source URL, and timestamp
- **Multi-Language Translation**: 10+ language support for translations
- **Zero Interruption**: Save words without breaking your reading/watching flow

**User Scenarios**:
- Watching TED talks → click unfamiliar words in subtitles → save with full context
- Reading Medium articles → highlight words → instant lookup and save
- Studying academic papers → build personal vocabulary collection

### 2.2 iOS App (Learning Center)

#### Personalized Word Cards
- Custom definitions and example sentences
- Part-of-speech tagging and categorization
- Full context preservation with source links
- Personal notes and tags

#### Multi-Modal Review Methods

| Method | Description | Best For |
|--------|-------------|----------|
| Notification Flashcards | Micro-learning when unlocking phone | Busy professionals |
| Home Screen Widgets | 3 sizes, always visible | Passive exposure |
| Lock Screen Widgets | Review without unlocking | Quick sessions |
| AI Podcasts | Male-female dialogue of your words | Commute learning |
| Spaced Repetition | Algorithm-optimized timing | Long-term retention |

#### AI-Powered Features
- **AI Podcast Generator**: Conversational podcasts using YOUR saved words
- **MCP Integration**: Connect with Claude, ChatGPT, and other AI apps
- **Word Overview**: AI-generated definitions and usage scenarios
- **Example Sentences**: Real-world context with translations
- **Dialogue Scenes**: AI-generated practice conversations

#### Encounter Tracking & Learning Analytics
- **Encounter Counter**: See how many times you've encountered each word
- **Context History**: View all previous contexts and sources where you saved the word
- **Learning Journey**: Track your progress with each word across different materials
- **Research-Based**: 5-8 encounters in different contexts is proven key to mastery
- **Merge Contexts**: Save the same word multiple times to build comprehensive understanding

#### Practice Modules (Available)
- Classic Flip (flashcards)
- Fill in the Blank
- Context Choice
- Definition Match

### 2.3 Cross-Platform Sync

- **Seamless Synchronization**: Chrome ↔ iOS ↔ Cloud in real-time
- **No Account Required**: Use basic features without login
- **Cloud Backup**: Encrypted storage with user data ownership
- **Account Deletion**: Complete data removal available anytime

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## 3. TARGET USERS (Personas)

### 3.1 Test Preppers - "Ambitious Amy"
- **Demographics**: 22-28 years old
- **Goal**: TOEFL/IELTS high scores, study abroad
- **Pain Points**: Insufficient vocabulary, low memory efficiency
- **Use Case**: Save words while watching YouTube prep videos
- **Value Proposition**: Real-context memory, exam vocabulary coverage

### 3.2 Career Professionals - "Career-Driven Chris"
- **Demographics**: 25-35 years old
- **Goal**: Improve workplace English, international career
- **Pain Points**: Busy schedule, hard to arrange study time
- **Use Case**: Reading industry reports, email communication
- **Value Proposition**: Fragmented learning, professional vocabulary

### 3.3 Lifelong Learners - "Curious Emma"
- **Demographics**: 30-50 years old
- **Goal**: Maintain learning habits, expand knowledge
- **Pain Points**: Traditional methods boring, lack of motivation
- **Use Case**: TED talks, English blogs, news reading
- **Value Proposition**: Interest-driven, natural lifestyle integration

### 3.4 Tech Enthusiasts - "Tech-Savvy Tom"
- **Demographics**: 25-40 years old
- **Goal**: Use cutting-edge tech to improve efficiency
- **Pain Points**: Traditional tools too outdated, want AI integration
- **Use Case**: Using AI tools, smart hardware
- **Value Proposition**: Frontier technology, multi-modal learning

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## 4. PRICING

### Free Plan
- Unlimited word lookups
- Save up to 50 words
- Basic sync (single device)
- Limited widgets

### Yearly Plan - $39.99/year
- Unlimited word saving
- AI podcast generation
- Full widget suite
- Practice modules
- MCP integration
- Cross-device cloud sync
- 7-day free trial

### Lifetime Plan - $99.99 one-time
- Everything in Yearly
- All future features
- Best long-term value
- One-time payment

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## 5. COMPETITIVE ANALYSIS

### 5.1 Direct Competitors

#### vs Anki
| Dimension | Anki | Lockcard |
|-----------|------|----------|
| Setup | Complex deck creation required | Zero configuration |
| Context | Manual card creation | Automatic from YouTube/Web |
| AI Features | None | AI podcasts, MCP integration |
| Passive Learning | None | Widgets, notifications |
| Learning Curve | Steep | Immediate use |

**Lockcard Advantage**: Modern UX, automatic context capture, AI-powered features

#### vs Quizlet
| Dimension | Quizlet | Lockcard |
|-----------|---------|----------|
| Content | User-generated, quality varies | Personal from real content |
| Context | Pre-made lists | Original sentences preserved |
| AI | Limited | Full AI podcast generation |
| Focus | General study | English vocabulary specialization |

**Lockcard Advantage**: Context-based learning, AI personalization, seamless capture

#### vs Duolingo
| Dimension | Duolingo | Lockcard |
|-----------|----------|----------|
| Approach | Structured curriculum | Self-directed discovery |
| Level | Beginner to intermediate | Intermediate to advanced |
| Vocabulary | Fixed lessons | Personal from real content |
| AI | Basic | Advanced podcast generation |

**Lockcard Advantage**: For learners already consuming English content, personalized vocabulary

### 5.2 Lockcard's Competitive Moats

1. **Product Moat**: Chrome + iOS seamless experience, context preservation
2. **Data Moat**: User vocabulary + behavior data for recommendation optimization
3. **Tech Moat**: <0.1% crash rate, 30+ version iterations, MCP integration
4. **Ecosystem Moat**: MCP live, OpenAPI coming, potential hardware integration

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## 6. USE CASES

### 6.1 YouTube Learning
Watch educational videos, TED talks, or English learning content. Click any word in subtitles to save with timestamp and context. Review later via flashcards or listen to AI-generated podcasts during commute.

### 6.2 Article Reading
Encounter new words while reading news, blogs, academic papers. Save instantly with original sentence preserved. Build a personal vocabulary collection reflecting your actual interests.

### 6.3 Daily Micro-Learning
Use notification flashcards throughout the day. No need to remember to open the app—vocabulary practice fits into natural micro-moments: waiting in line, commuting, between tasks.

### 6.4 AI-Assisted Learning
Using Claude or ChatGPT and encounter new words? Save directly to Lockcard via MCP integration. Access your vocabulary within AI conversations for practice.

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## 7. IMPORTANT URLS

- **Homepage**: https://www.lockcard.app/
- **Chrome Extension**: https://chromewebstore.google.com/detail/english-vocabulary-builde/opecnacmghifdlgdpejcjmjhpjoipamp
- **iOS App**: https://apps.apple.com/us/app/lockcard-vocabulary-builder/id1534553106
- **FAQ**: https://www.lockcard.app/faq
- **Blog**: https://www.lockcard.app/blog
- **Affiliate Program**: https://lockcardvocabularybuilder.affonso.io/

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## 8. SUPPORT & CONTACT

### Support Channels
- **Email**: bravetsia@gmail.com
- **FAQ**: https://www.lockcard.app/faq

### Social Media
- **Twitter/X**: @lockcardapp

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*This document is optimized for AI consumption. For human visitors, please visit https://www.lockcard.app/*