Obo | One By One

Look up any Japanese word, just share text to Obo. Now with Indonesian meanings and 1-tap AI flashcards complete with example sentences

Master Japanese with ObO - Your Personal Language Learning Companion

ObO makes learning Japanese simple, effective, and enjoyable. Whether you're preparing for JLPT, planning a trip to Japan, or just starting your language journey, ObO adapts to your learning style.

KEY FEATURES: • Smart Spaced Repetition (FSRS v5)

• Learn efficiently with scientifically-proven algorithms
• Cards appear exactly when you need to review them
• Track your progress with detailed analytics

• AI-Powered Smart Add

• Generate flashcards instantly with AI
• Enter words or describe topics in your own language
• Save time creating study materials

• Perfect for Beginners

• Step-by-step Hiragana & Katakana guide
• Interactive kana practice with immediate feedback
• Beginner-friendly onboarding walks you through everything

• Flexible Study Options

• Ready-made template decks (JLPT N5-N1)
• Import your Anki decks
• Create custom decks for any topic
• Grammar, vocabulary, kanji - all in one place

• Beautiful & Intuitive

• Clean, distraction-free interface
• Dark mode support
• Smooth animations
• Designed for daily study habits

• Premium Features

• AI Smart Add with generous free quota
• Premium decks curated by experts
• Priority support
• Unlock unlimited potential

LEARNING PATHS:

For JLPT Students: Complete decks from N5 to N1 with thousands of essential words and grammar points.

For Travelers: Quick study packs with practical phrases for dining, transportation, shopping, and emergencies.

For Anime/Manga Fans: Learn the Japanese you hear in your favorite shows and read manga in the original language.

For Serious Learners: Advanced customization, grammar analysis, and comprehensive study tracking.

WHY OBO? • Offline-first: Study anywhere, anytime • No ads interrupting your learning • Privacy-focused: Your data stays yours • Regular updates with new features • Responsive support team

Start your Japanese learning journey with ObO today. Whether you're studying 10 minutes a day or several hours, ObO helps you make consistent progress toward fluency.

Download now and get started for free!