StowryBits

Learn languages with custom tailored lessons based on your interest. StowryBits is an AI-powered audio-based language learning platform featuring interactive chapters, intelligent vocabulary training, and pronunciation practice with real-time feedback.

The Challenge

Language learners struggle with engaging content that matches their interests, lack personalized pronunciation feedback, and need flexible learning that works during commutes or workouts when screens aren’t practical.

The Solution

StowryBits provides:

• AI-Generated Audio Chapters: Contextual lessons with multi-voice narration featuring tutors, narrators, and character actors
• Smart Vocabulary System: Auto-extracted words with CEFR difficulty levels, translations, and training phrases at multiple speeds
• Pronunciation Practice: Record yourself, get AI transcription and scoring (1-5 scale) using real speech recognition
• Car Mode: Hands-free learning with part navigation perfect for commuting
• Course Editor: Content creators can build courses with AI-assisted phrase generation, translation, and explanation

Built With Entropico

Built on Entropico’s platform, StowryBits leverages the shared Vue.js/NestJS stack for rapid iteration. The platform’s S3 integration and AI service layer enabled sophisticated multi-voice audio generation, while the mobile-first architecture supports both interactive learning and hands-free car mode.

Key Features

• AI-powered content generation (phrases, translations, explanations, vocabulary)
• Multi-voice text-to-speech with persona system and emotion tags
• Interactive vocabulary dialog with examples and slow-speed playback
• Real-time pronunciation scoring with Levenshtein distance algorithm
• Progress tracking across chapters and vocabulary mastery
• Stitched audio playback for seamless listening experience

Key Metrics

• $6.3B+ language learning market
• Audio-first approach for hands-free learning
• AI-generated personalized content at scale
• Multi-language platform (Finnish, German, and expanding)