Language Byte vs PrepLockin

Learn languages on your Apple Watch and go deeper with on-device AI on iPhone. Language Byte combines wrist-based micro-learning with 18 AI-powered practice tools—all running privately on your device. No cloud. No account. No data collected. WHAT'S INCLUDED • 24 languages: English, Spanish, French, German, Italian, Japanese, Chinese, Korean, Portuguese, Thai, Arabic, Hindi, Russian, Turkish, Dutch, Swedish, Polish, Vietnamese, Indonesian, Greek, Hebrew, Ukrainian, Swahili, and Haitian Creole • 85+ language pair directions • English → Spanish free; Premium unlocks all languages + AI features ($6.99/month or $49.99/year) • SM-2 spaced repetition with context-aware scheduling • Personalized learning paths that adapt to your style • CEFR levels (A1–C2) with example sentences in context • iCloud sync for progress across Watch and iPhone APPLE WATCH • Digital Crown navigation for hands-free study • Auto-advance mode for passive learning during workouts or commutes • 6 quiz modes: Quick Drill, Listening, Focus Mistakes, Mixed, Timed, and Custom • Pronunciation practice with real-time feedback • Daily Word of the Day and customizable goals • Watch face complications: vocabulary, XP progress, and reviews due • Siri Shortcuts: "Start Study," "Start Review," "Start Quiz" • Interactive quiz notifications with XP rewards • On-device search—no internet needed IPHONE — ON-DEVICE AI (Premium) 18 AI-powered tools running entirely on your device: • AI Conversation & Voice Chat: Practice speaking in real-world scenarios • Grammar Drills & Sentence Building: Targeted exercises with AI explanations • Story Mode: Interactive branching stories with comprehension choices • Adaptive Quiz: AI targets your weak areas with dynamic difficulty • Cultural Notes, Idiom of the Day, Word Map, Study Plan, Journal, Flashcard Generator • Translation Assistant, Situational Vocabulary, Language Comparison • Apple Translate integration (on-device, no internet required) On-Device AI: Premium subscribers can download an optional AI language model (~2 GB) to unlock advanced features like conversation practice, grammar drills, story mode, and personalized study plans. The AI runs entirely on your device—no data is sent to external servers. A Wi-Fi connection is recommended for the initial model download. STAY MOTIVATED • XP, 20 levels, streaks, and level-up celebrations • Achievements and milestones • Weekly review, analytics dashboard, and learning insights • CSV export for progress tracking • Location-based vocabulary suggestions (Premium) PRICING • English → Spanish: Free • Premium: $6.99/month or $49.99/year • 7-day free trial for new subscribers • Unlocks all 24 languages + 18 AI features Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Block TikTok & Instagram. Learn GRE words. Every time you reach for a distraction, PrepLockin turns it into a 90-second vocab quiz. 958 words. Illustrated flashcards. Three addictive games. Spaced repetition. And the only GRE app that uses Apple's Screen Time API to block the apps that steal your study time. HOW IT WORKS 1. Vocab finds you Words rotate on your lock screen, home screen, and StandBy widget. You just glance at your phone — which you already do 96 times a day. 2. Earn your scroll Block Instagram, TikTok, whatever steals your time. Answer 5 vocab questions to unlock. 90 seconds. Then scroll. 3. Play to remember Three games encode each word three different ways. Match Madness, Word Scramble, Context Detective. Studying that feels like playing. FEATURES • 958 Illustrated Flashcards — Every word has a custom illustration. Visual + verbal = 65% better recall. • Wave System — 10 words at a time. Master 8 to unlock the next wave. • Quiz-to-Unlock — Block any app. Answer vocab questions to unlock. Uses Apple's Screen Time API. • Widgets Everywhere — Lock screen, home screen, StandBy. Words rotate throughout your day. • Spaced Repetition — Leitner system decides what you see and when. 3 correct = mastered. • Streaks & Heatmap — Daily streak counter + GitHub-style activity heatmap. Don't break the chain. Built on spaced repetition, dual coding theory, and the testing effect — proven to improve retention by 200%+. PRICING 7 days free. Full access. No feature tiers. • Monthly: $7.99/month • Annual: $39.99/year ($3.33/mo — save $55.89) Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. You can manage or cancel in Settings > Apple ID > Subscriptions.