Comparison

NovaView vs Gwtar Viewer

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

NovaView

Features
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NovaView is a lightweight, privacy-focused document reader designed for AI-generated content. โ€ข Open files from anywhere โ€” Files app, Safari, Mail, or any sharing source โ€ข Works completely offline โ€” no cloud sync, no account required โ€ข Supports 7 formats: Markdown, HTML, JSON, YAML, CSV, and plain text โ€ข Customizable reading experience โ€” font size, theme, max line width โ€ข 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. โ€ข Markdown renders with full GFM support, syntax-highlighted code blocks, and inline LaTeX math โ€ข JSON and YAML show a clean, searchable tree view โ€” no more raw wall-of-text โ€ข CSV files display as a formatted table with headers โ€ข 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 โ€ข Offline-first design โ€” works without internet โ€ข Clean, distraction-free reading surface โ€ข Dark and light theme support โ€ข Adjustable font size and line width โ€ข Full-text search in JSON/YAML views โ€ข Share extension โ€” open files from any app directly into NovaView

About

Gwtar Viewer

Read full description

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

NovaView4 screens
Gwtar Viewer3 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
NovaView versus Gwtar Viewer: the parameters behind the verdict, then further details
ParameterNovaViewGwtar Viewer
PriceFreeFree
Update frequencyWeeklyโ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 โ€” better14.0
Further details โ€” not scored
Size34 MB8 MB
Age rating4+4+
DevelopermasbateYasuhiro Yamada

In-app purchases

None

NovaView

No in-app purchases

None

Gwtar Viewer

No in-app purchases

Questions

Is NovaView free?
NovaView is free to download, with no in-app purchases.
Is Gwtar Viewer free?
Gwtar Viewer is free to download, with no in-app purchases.
Do NovaView or Gwtar Viewer have ads?
Neither NovaView nor Gwtar Viewer shows ads.

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