Language Byte
Daily Language Learning
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
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/
Quality of life updates and bug fixes.
The developer, Kai Wen Digital, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kevin Franklin
- Size
- 90.5 MB
- Category
- Education
- Compatibility
Requires iOS 17.4 or later.
- iPhone
Requires iOS 17.4 or later. - Mac
Requires macOS 14.4 or later and a Mac with Apple M1 chip or later. - Apple Watch
Requires watchOS 11.4 or later.
- iPhone
- Languages
English and 23 more
- English, Arabic, Dutch, French, German, Greek, Haitian, Hebrew, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swahili, Swedish, Thai, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Monthly Premium $6.99
- Annual Premium $49.99
- Copyright
- © Kai Wen 2025
