OpenViewer vs AllDocs
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
OpenViewer
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OpenViewer is a lightweight viewer for all standard document formats. [Supported formats] PDF Β· HWP Β· DOCX Β· XLSX Β· PPTX Β· EPUB Β· TXT Β· Images [Key features] β’ Fast launch β’ Dark mode β’ Recent files + favorites β’ 100% on-device processing β’ Native HWP support for Korean documents [Why OpenViewer?] - No in-app purchases - No account required - Ad-supported (no ads inside viewer) - English, Korean, Japanese UI Contact: wowpia0127@gmail.com
AllDocs
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Got a document? Open it in AllDocs and read it big and clear. AllDocs is a document viewer that opens many file formats in one tidy place. Zoom the text up or down to read anything comfortably, and edit and save text and markdown right where you are. β Supported formats β’ PDF (.pdf) β view (with CJK/Korean font support) β’ Text (.txt), Markdown (.md) β view + edit β’ Code & structured text (.json .js .ts .py .java .c .go .sql .yaml .csv .html .xml and more) β view + edit β’ Word (.docx, .doc) β view β’ Hangul (.hwp, .hwpx) β view β’ Excel (.xlsx, .xls), PowerPoint (.pptx, .ppt) β view β’ EPUB e-books (.epub) β view β Key features β’ Text zoom in/out β pinch to zoom and step buttons for clarity β’ Edit and save text and markdown β’ Dark mode and readability-focused typography β’ In-document search, recent files, favorites β’ "Open in AllDocs" from the Files app and other apps β’ Fully offline, no ads β Privacy Your documents are processed only on your device and are never sent anywhere. β AllDocs Pro (one-time lifetime purchase) Unlimited recent files and favorites, PDF export, extra themes and fonts, and multiple documents. β Please note .doc/.docx/.hwp/.hwpx documents are view-only, and the layout of some elements such as tables and shapes may look different from the original. Editing and saving are supported for text (.txt) and markdown (.md). Other formats can be exported as text or markdown for editing.
Screenshots
Verdict
The clearest difference is in-app purchases: OpenViewer at none against AllDocs's 1. AllDocs's advantage is ads (none vs shown). On price, device support and iOS requirement 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. AllDocs sells 1 one-off in-app purchase. OpenViewer asks for nothing beyond the download.
| Parameter | OpenViewer | AllDocs |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | β |
| Ads | Yes | No β better |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 15.1 β better | 16.0 |
| Further details β not scored | ||
| Size | 41 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | BongJun Park | Byoungho Kim |
In-app purchases
OpenViewer
No in-app purchases
AllDocs
- AllDocs Pro (Lifetime)$5.99









