# M.O.U.D.C Audio Guide — Underground Discharge Channel

> Underground Discharge Channel (iPhone/iPad app by Edogawa River Office.)

- Source: https://appshunter.io/ios/app/moudc-audio-guide/id1424101313 (this page in markdown: same URL + `.md`)
- Developer: [Edogawa River Office](https://appshunter.io/developer/1423030450)
- Category: Travel, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 9.3 · 78 MB
- Languages: English, Japanese, Korean, Chinese, Chinese
- Released: 2018-08-22
- Data updated: 2026-06-10
- User reviews in markdown: https://appshunter.io/ios/app/moudc-audio-guide/id1424101313/reviews.md

## What is M.O.U.D.C Audio Guide?

This is the official guide app for the “Metropolitan Area Outer Underground Discharge Channel: The World’s Largest Underground Drainage Channel.” It will introduce the facilities’ roles, significance, and highlights. In addition to Japanese, language options include English and Chinese. Facilities will be introduced using photos, videos, and narrations.


## Version history (last 4 releases)

### 1.4 — 2025-03-19

Korean content

### 1.2 — 2024-03-11

Bug fix

### 1.1 — 2024-02-05

Bug fix

### 1.0 — 2018-08-22

This app has been updated by Apple to display the Apple Watch app icon.

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All apps by Edogawa River Office: https://appshunter.io/developer/1423030450

## Related topics

[edogawa river office](https://appshunter.io/ios/topics/edogawa-river-office)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*