M.O.U.D.C Audio Guide vs FlashTranslation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
M.O.U.D.C Audio Guide
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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.
FlashTranslation
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Flash Translation is a next-generation real-time interpretation tool built on the latest Gemini Live native model. More than just a translation app, it’s your personal digital interpreter. Leveraging Gemini's low-latency multimodal capabilities, Flash Translation achieves professional-grade response speeds, making cross-language communication truly "zero-wait." Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: M.O.U.D.C Audio Guide at none against FlashTranslation's 3. M.O.U.D.C Audio Guide also leads on iOS requirement (9.3 vs 17.6). FlashTranslation's advantage is update cadence (every 5 days vs every 12 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. FlashTranslation sells 3 in-app purchases, starting at $14.99 per month. M.O.U.D.C Audio Guide asks for nothing beyond the download.
M.O.U.D.C Audio Guide ships an update every 12 months, FlashTranslation every 5 days. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.
| Parameter | M.O.U.D.C Audio Guide | FlashTranslation |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 12 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.3 — better | 17.6 |
| Further details — not scored | ||
| Size | 78 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Edogawa River Office | 修源 黄 |
In-app purchases
M.O.U.D.C Audio Guide
No in-app purchases
FlashTranslation
- Pro Membership (Monthly)$14.991 Month
- Pro Membership (Yearly)$149.991 Year
- 终身会员付费$34.99
Questions
Is M.O.U.D.C Audio Guide free?
Is FlashTranslation free?
Do M.O.U.D.C Audio Guide or FlashTranslation have ads?
Which is updated more often, M.O.U.D.C Audio Guide or FlashTranslation?
Other comparisons
