Vastlabs App vs PromptFluent

Vastlabs is a leading destination for online courses that empowers you to grow professionally and personally. Get the app to explore our expansive library of thousands of topics with cutting-edge online video courses in Coding, Web Development, PHP, Flutter, Python, Java, Business, Marketing, SEO, SEM, Drawing, Photography, and much more.

PromptFluent is the app that teaches you the language of AI. Master prompt engineering, technical vocabulary, and professional communication for ChatGPT, Claude, Copilot, and beyond. Works for English, Spanish, and Portuguese (Brazilian) speakers. THREE NATIVE LANGUAGE MODES Choose your language on first launch: - English speakers: 40 AI-focused lessons on prompt engineering and technical communication - Spanish speakers: 80 bilingual lessons combining English learning with AI terminology - Portuguese speakers: 80 bilingual lessons combining English learning with AI terminology THREE LEARNING MODES STUDY - Work through structured lessons across 16 units covering four proficiency levels (Starter to Architect). Each lesson includes teaching content, vocabulary, grammar, dialogues with AI, and a quiz. Browse our encyclopedia of 560+ tech terms across 15 categories, study with flashcards, master English grammar with 24 tech-focused lessons, and explore 60 copy-ready prompt templates. Discover 10 AI use cases, a glossary of 20 AI tools, 24 reading comprehension passages, and 16 dev culture notes. PRACTICE - Build real skills with 10 practice modules: AI Chat Practice (100+ responses in an offline chat simulator), Daily Drills with streak tracking, AI Conversations (dialogues + AI response comprehension), Listening Hub (audio comprehension + dictation), Prompt Workshop (write and score your own prompts + prompt scramble), Error Drill (spot and fix common mistakes), Real-World Scenarios (24 workplace writing exercises), Email & Message Templates (20 templates), Verb Hub (conjugation + tense contrast + phrasal verbs), and Spaced Repetition Review Hub. PLAY - 6 comprehension-focused games: Prompt Builder (branching tech scenarios), Prompt Debugger (40 challenges to fix bad prompts), Context Guesser (48 challenges to infer meaning), Response Ranker (32 challenges to judge AI output quality), Translation Shootout (translate under pressure), and Daily Challenges. STRUCTURED LESSONS Progress through a curriculum designed for AI communication: - Starter (Lessons 1-20): First contact with AI, basic tech vocabulary, simple prompt patterns, reading AI output - Practitioner (Lessons 21-40): Coding vocabulary, describing code to AI, technical documentation, intermediate prompt engineering - Builder (Lessons 41-60): Complex prompt structures, working with coding agents, technical English grammar, professional communication - Architect (Lessons 61-80): Advanced prompt engineering, system design communication, AI agent orchestration, mastery Each lesson features five interactive sections: Teach, Vocabulary, Grammar, Dialogue, and Quiz. Score 60% or higher to unlock the next lesson. SMART LEARNING TOOLS - Spaced Repetition System (SRS) using the SM-2 algorithm - Offline AI Chat Simulator with 100+ pattern-matched responses - 50 English verb conjugation tables for technical verbs - 60 prompt templates organized by task type - 24 reading comprehension passages from real tech docs - Progress dashboard with skill radar, weekly goals, and universal bookmarks - Text-to-speech for all English content - Dark mode support GAMIFICATION - 20-level XP progression system (Newbie to Supreme) - 8 achievement badges to unlock - Daily challenges with XP rewards - Streak tracking for consistent habits Works 100% offline. No account required. All data stays on your device.