HDI Authenticator vs Fasoo Secure Viewer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
HDI Authenticator
Read full descriptionHide full description
HDI Authenticator λ μ¬μ©μ 2μ°¨ μΈμ¦μ μ¬μ©κ°λ₯ν μΌνμ© λλ€ μ½λλ₯Ό μ 곡ν©λλ€.
Fasoo Secure Viewer
Read full descriptionHide full description
Fasoo Secure Viewer is a document security solution optimized for mobile environments. It offers significantly improved security features compared to previous versions, greatly enhancing the user experience. With Fasoo Secure Viewer, users can securely access encrypted documents on their devices anytime, anywhere, and perform their tasks efficiently. Note: The Fasoo Secure Viewer app is only available for users authenticated in FED-M. Non-authenticated users will not be able to access both encrypted and non-encrypted plain documents. Main features: - Supports document viewing and editing with permission-based access control. β» Available document permissions may vary depending on the purchased license type and administrator settings. - Displays screen watermarks. - Prevents screen captures. - Provides features for document search and management. - Controls document access based on location. Supported file formats 1. View & Edit - MS Word 97 ~ (*.doc, *.docx, *.dot, *.dotx) - MS PowerPoint 97 ~ (*.ppt, *.pptx, *.pps, *.ppsx. *.pot, *.potx) - MS Excel 97 ~ (*.xls, *.xlsx, *.xltx, *.csv) - Adobe PDF 1.2 ~ 1.7 (*.pdf) 2. View only - Hangul 97 ~ 3.0, 2002 ~ 2014 (*.hwp, *.hwpx) - Text files (*.txt) - Image files (*.bmp, *.jpg, *.png, *.gif, *.wmf, *.emf, *.jpeg, *.tiff)
Screenshots
Verdict
The clearest difference is update cadence: Fasoo Secure Viewer at every 6 weeks against HDI Authenticator's every 4 months. HDI Authenticator's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HDI Authenticator ships an update every 4 months, Fasoo Secure Viewer every 6 weeks. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.
| Parameter | HDI Authenticator | Fasoo Secure Viewer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 6 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 22 MB | 118 MB |
| Age rating | 4+ | 4+ |
| Developer | KOREAEXPERT | Fasoo AI Co., Ltd. |
In-app purchases
HDI Authenticator
No in-app purchases
Fasoo Secure Viewer
No in-app purchases
Questions
Is HDI Authenticator free?
Is Fasoo Secure Viewer free?
Do HDI Authenticator or Fasoo Secure Viewer have ads?
Which is updated more often, HDI Authenticator or Fasoo Secure Viewer?
Other comparisons















