Vocabulary - VocaStack

Master vocabulary across four languages simultaneously with VocaStack - the privacy-first language learning app designed for serious learners. WHY VOCASTACK? Learn Smarter, Not Harder Build vocabulary in English, Spanish, German, and French at the same time. See linguistic connections between language families, discover cognates, and develop true polyglot skills from day one. Privacy You Can Trust Your learning data stays on your device. No tracking, no ads, no subscriptions. Everything works completely offline after installation. Proven Learning Science Our spaced repetition algorithm ensures you remember what you learn. Study smarter with personalized review schedules based on your performance. Gamification That Motivates Daily streaks, achievement milestones, and progress tracking keep you motivated without manipulation. Earn streak freezes and watch your vocabulary grow across all four languages. Complete Control Skip languages you don't want to learn right now. Set your own daily goals. Create custom word lists. Export your data anytime. VocaStack adapts to your learning style. CORE FEATURES Multi-Language Learning Study the same word in English, Spanish, German, and French side-by-side. Understand how Romance languages (Spanish, French) and Germanic languages (English, German) connect. Flashcards with Context Every word includes example sentences in all four languages. Learn vocabulary in context, not isolation. Spaced Repetition System Review words at scientifically optimized intervals. The algorithm adapts to your memory, showing difficult words more frequently. Progress Tracking Daily streak counter with freeze days, achievement badges at 10, 50, 100, 500, and 1000 words learned, learning heatmap calendar, and detailed statistics by language. Custom Word Lists Add your own vocabulary with translations. Perfect for travelers, students, and professionals learning industry-specific terms. Beautiful Dark Mode Gorgeous light and dark themes that are easy on your eyes during long study sessions. Completely Offline Learn on planes, trains, or anywhere without internet. No connectivity required after installation. PERFECT FOR Students preparing for language exams, travelers building practical vocabulary, polyglots learning multiple languages, professionals expanding business vocabulary, anyone tired of subscription-based learning apps, and learners who value privacy and data ownership. ONE-TIME PURCHASE Pay once, learn forever. No subscriptions, no recurring fees, no hidden costs. 100 WORDS TO START Begin with 100 carefully selected common words across all four languages. Perfect foundation for beginners and intermediate learners. WHAT USERS LOVE No subscription fatigue - pay $3.99 once and own it forever. True offline learning - no internet dependency. Privacy-first design - your data never leaves your device. Multi-language approach - learn 4 languages simultaneously. Spaced repetition that actually works. Beautiful, intuitive interface. Complete user control over learning pace. LANGUAGES INCLUDED English, Spanish (Castilian), German (Standard German), French (Standard French) START YOUR POLYGLOT JOURNEY Download VocaStack today and discover how learning vocabulary across multiple languages simultaneously accelerates your language mastery. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/