Experience the inner workings of a massive flood control system through augmented reality. Visualize floodwater flow in a pressure adjustment tank and explore areas not covered by tours.





184+ iOS apps & games curated and reviewed
If you already know M.O.U.D.C Audio Guide, this is the deeper bench. 184+ edogawa river office apps and games for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | |
| 2 | Free | — | No | No | Jul 2026 | |
| 3 | Free | 4.5★ (3.6K) | No | Yes | Jul 2026 | |
| 4 | Free | 4.8★ (3.4K) | No | No | Jul 2026 | |
| 5 | Free | 4.4★ (9.9K) | Yes | Yes | Jul 2026 | |
| 6 | Free | 4.7★ (2K) | No | Yes | Jul 2026 | |
| 7 | Free | 4.6★ (8.2K) | Yes | Yes | Jul 2026 | |
| 8 | Free | 4.7★ (2K) | No | Yes | Jul 2026 |










Experience the inner workings of a massive flood control system through augmented reality. Visualize floodwater flow in a pressure adjustment tank and explore areas not covered by tours.






Record, transcribe, and organize audio notes for meetings and studies. Link audio moments to text notes, skip silences, and dictate your thoughts. Share and sync across devices with customizable themes and reminders.


This comprehensive language learning tool offers an extensive dictionary with over 175,000 entries and 58,000 example sentences. It includes advanced features like handwriting recognition, conjugation search, and a text reader, alongside flashcard study tools and JLPT-specific lists. Learn Japanese offline with this pocket-sized study companion.


Record, transcribe, and summarize phone calls with AI. This app converts conversations into text and generates concise summaries, action items, and meeting minutes. Organize and access your call data easily for enhanced productivity.


Learn to speak and write Japanese effectively with this easy-to-use phrasebook app. It offers essential translated phrases, native speaker audio, and vocabulary to help you communicate with locals and navigate Japan. Start with free content and unlock more for comprehensive learning.


Record high-quality audio and accurately transcribe it into text using advanced AI. Export and share recordings and transcripts in various formats, with features like live transcription and speaker identification.


Practice English speaking and listening through fun activities like dubbing videos, singing songs, and interactive games. AI-powered feedback helps improve pronunciation and fluency, while a vast library of content supports vocabulary building and exam preparation.


Capture audio with a variety of formats and organize it into folders. Edit recordings with trimming and merging tools, and share them easily. Transcribe your voice memos into text for quick reference and accessibility.


This application offers a relaxing and interactive method for learning Japanese. It uses engaging games that connect words with images to reinforce meaning and provides opportunities to practice language mastery. Track your progress and test your knowledge with a summary and rating.


Practice spoken language with an AI tutor that offers live video calls, chat practice, and real-time grammar correction. Access an intelligent vocabulary book and learn over 60 languages with adjustable speech speeds and conversation difficulty levels.


Access audio content for Japan Times Publishing books directly on your smartphone or tablet. Search for books by keyword or barcode, download audio files, and enjoy playback with helpful study features like skipping and repeating.


This app offers a fun and efficient way to learn English, focusing on speaking and pronunciation. It features an AI teacher, adaptive courses, and a variety of content for real-life situations. Practice with others through conversations and quizzes.


Bring animated sticker pets to your iPhone screen with interactive characters that can be enjoyed within the app or as home screen widgets. Supported devices can also experience these dynamic companions on the Dynamic Island.


Connect with new people through engaging multiplayer games and interactive social features. Discover shared interests, turn boring moments into fun ones, and foster deeper connections with others.


Master Japanese hiragana and katakana handwriting with this app. It uses advanced recognition technology for stroke-by-stroke guidance and timed tests. Learn efficiently with bite-sized lessons and track your progress.


Experience a unique mahjong adventure with a special collaboration event. Engage in classic and creative game modes with a diverse cast of characters, featuring a star-studded voice cast and customizable rewards. Enjoy both traditional and unique mahjong challenges.


Stay informed about your office building's news, events, and amenities. Sign up for classes, learn about services, and receive important alerts. This app connects tenants and employees with their workplace.


This app allows travelers in Japan to issue a digital transit and payment card on their iPhone. It enables seamless travel on major transportation networks and quick payments at shops. Users can also purchase Green Car tickets for added comfort and make Shinkansen reservations directly within the app.


Explore the vital role of rivers in ecosystems and human life through an interactive augmented reality experience. Manipulate river flows to understand the impact of dams and sustainable development, while collecting stories of the people and wildlife that depend on them.