BD vs PUBLISH KING
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BD
This application allows users to view encrypted audio and video files from a specific USB drive, facilitating learning and course consumption. It employs advanced encryption and anti-piracy measures to protect intellectual property.
- View encrypted audio/video files
- Supports various file formats
- Proprietary encryption algorithm
- USB drive key authentication
- Anti-screen recording technology
- Prevents unauthorized sharing
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關於【BD-P加密隨身碟_影音播放器】應用程式 此應用程式可開啟BD-P加密隨身碟裡的影音檔案，進行觀看並學習課程。 為最理想版權保護工具，保護您的有價智慧。 適合「函授教學」、「遠距教學」、「補課教學」、「影音發行」的工具。 1、檔案加密：支援影片、音樂、文件….等檔案格式；以專用演算法加密，一般播放程式無法開啓。 2、專用播放程式：加密的檔案必須由此APP程式方能開啓檔案，程式的選單介面能提供有系統的課程順序，方便閱覽。 3、隨身碟金鑰：加上隨身碟金鑰來驗證是否有閱覽BD-P加密檔的權限，多重保護，達到最佳防盜拷效果。 4、防側錄：最新技術，可阻擋側錄軟體，杜絕盜版，保護智慧財產權。 5、防分享：專屬隨身碟若未插入手機，就不能播放課程，杜絕一人買、多人看。
PUBLISH KING
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PUBLISH KING是一套線上學習工具，透過影片(MP4)、聲音(MP3)及文字(PDF)傳遞知識
Screenshots
Verdict
The clearest difference is update cadence: PUBLISH KING at fortnightly against BD's every 4 months. BD's advantage is iOS requirement (13.0 vs 15). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
BD ships an update every 4 months, PUBLISH KING fortnightly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.
| Parameter | BD | PUBLISH KING |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | — |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15 |
| Further details — not scored | ||
| Size | 11 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | BD MEDIA MULTIMEDIA CO.,LTD. | Hsu Bering |
In-app purchases
BD
No in-app purchases
PUBLISH KING
No in-app purchases
