NovaView vs Gwtar Viewer
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
NovaView
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NovaView is a lightweight, privacy-focused document reader designed for AI-generated content. โข Open files from anywhere โ Files app, Safari, Mail, or any sharing source โข Works completely offline โ no cloud sync, no account required โข Supports 7 formats: Markdown, HTML, JSON, YAML, CSV, and plain text โข Customizable reading experience โ font size, theme, max line width โข Fast rendering โ optimized for large documents WHY NOVAVIEW? AI tools generate documents in various formats. NovaView is built to display them all cleanly, without the overhead of a full editor. โข Markdown renders with full GFM support, syntax-highlighted code blocks, and inline LaTeX math โข JSON and YAML show a clean, searchable tree view โ no more raw wall-of-text โข CSV files display as a formatted table with headers โข HTML renders in a secure embedded viewer YOUR PRIVACY COMES FIRST NovaView stores nothing online. All files stay on your device. No analytics, no tracking, no cloud. WHAT'S INSIDE โข Offline-first design โ works without internet โข Clean, distraction-free reading surface โข Dark and light theme support โข Adjustable font size and line width โข Full-text search in JSON/YAML views โข Share extension โ open files from any app directly into NovaView
Gwtar Viewer
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Gwtar Viewer opens Gwtar archives โ self-extracting single-file HTML that packs a web page with all of its images and styles into one .html file. Gwtar files do not work when opened directly in a browser: they need a server that answers Range requests, fetching just the parts of the file that are actually needed. Gwtar Viewer runs a local server on your device to provide exactly that, letting the archive's own rendering logic do the rest. Your files are never modified. It also works as a viewer for ordinary HTML files, not just Gwtar. โ Features - Open and read Gwtar files (.html) - Files you open are kept as history cards with thumbnails for quick reopening - Page zoom, remembered per file - Light / dark themes, English / Japanese UI - One-tap deletion of site data stored by archives โ Privacy Everything happens on your device. The only network traffic is between the app and its own local server. Nothing is ever sent or collected externally. โ Open source Gwtar Viewer is open-source software under the 0BSD license. See the support URL. The Gwtar format was designed by Gwern Branwen (this app is an independent implementation).
Screenshots
Verdict
NovaView and Gwtar Viewer are too close to call on the numbers: across 5 compared parameters โ price, ads, in-app purchases and device support among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | NovaView | Gwtar Viewer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | โ |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 โ better | 14.0 |
| Further details โ not scored | ||
| Size | 34 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | masbate | Yasuhiro Yamada |
In-app purchases
NovaView
No in-app purchases
Gwtar Viewer
No in-app purchases








