PDFDarkMode vs HTML Reader Offline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDFDarkMode
Easily convert PDFs to a comfortable dark mode with custom text and background colors. Reduce eye strain while reading or studying long documents. Save and revisit your personalized PDFs in a private library.
- Upload PDFs from device
- Customize text and background colors
- Preview dark mode changes
- Download converted PDFs
- Personal PDF library
- Private by design
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PDFDarkMode makes your PDFs easier on the eyes, day or night. Upload any PDF, choose your own text and background colors, preview your changes, and download your converted document directly within the app. Whether you’re studying, reading long-form writing, or reviewing technical documents, PDFDarkMode helps reduce eye strain and make your PDFs visually comfortable and fully personalized. Features • Upload any PDF from Files or your device • Customize text color and background color • Preview your converted PDF in full dark mode • Download it directly • Save and revisit all converted PDFs in your personal library • One-time in-app purchase to download a dark mode PDF for $2.99 • Upgrade to PDFDarkMode Pro for $9.99 to unlock unlimited dark mode PDF downloads Private by Design No logins. No analytics. No tracking. Your PDFs stay private.
HTML Reader Offline
This app allows users to read local HTML and ZIP files offline. It's designed for developers, students, and learners to access documentation and course materials on their devices without an internet connection. Features include smart ZIP support, a built-in reader, table of contents, bookmarks, and reading progress tracking.
- Offline HTML and ZIP file reading
- Smart ZIP support with index.html detection
- Built-in WKWebView reader
- Auto-generated table of contents
- Bookmarks and reading progress saving
- Light, Dark, and Auto themes
- Long-image export
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HTML Reader Offline is a clean, fast, and privacy-friendly reader for local HTML files and ZIP tutorial packages. Built specifically for developers, students, and lifelong learners who keep documentation, course materials, and e-books on their devices, LocalPage turns any iPhone or iPad into a comfortable reading companion — completely offline. KEY FEATURES • Open HTML, HTM, and ZIP packages directly from the Files app, Mail, Safari, or any sharing-capable app via "Open with…". • Smart ZIP support: automatically detects index.html as the entry point; falls back to a file picker if none is found. • Built-in WKWebView reader with full support for local CSS, JavaScript, and image resources referenced by your documents. • Auto-generated table of contents from h1/h2/h3 headings — tap to jump anywhere instantly. • Bookmarks: add, remove, and revisit any reading position. • Reading progress: every document remembers exactly where you left off, down to one screen of accuracy. • Light, Dark, and Auto theme — matches the system or your preference. • Long-image export: capture an entire page into a single shareable image, perfect for archiving notes or sending tutorials to friends. • Universal app: optimized layouts for iPhone and iPad. • Multi-language UI: English by default, with full Simplified Chinese localization. PRIVACY FIRST • 100% offline reading. Your files never leave the device. • No accounts. No login. No ads. No analytics. No third-party trackers. • The only network request is to Apple StoreKit for the optional Tip Jar. OPTIONAL TIP JAR Settings includes an optional Tip Jar with three consumable in-app purchases. Tipping does NOT unlock any feature — every feature is free for everyone. SYSTEM REQUIREMENTS: iOS 15.0+, iPhone & iPad. Contact: cfd007@qq.com
Screenshots
Verdict
The clearest difference is update cadence: PDFDarkMode at every 4 days against HTML Reader Offline's every 2 months. On price, rating, ratings volume and ads 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. PDFDarkMode sells 5 one-off in-app purchases and HTML Reader Offline sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for PDFDarkMode against 5.0 for HTML Reader Offline. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
PDFDarkMode ships an update every 4 days, HTML Reader Offline every 2 months. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.
| Parameter | PDFDarkMode | HTML Reader Offline |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 4 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 — better | 16 |
| Further details — not scored | ||
| Size | 4 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Wildcatter LLC | 发达 陈 |
Customer experience
PDFDarkMode
HTML Reader Offline
In-app purchases
PDFDarkMode
- Download PDF (up to 100 pages)$0.99
- Dark Mode PDF Download2 variants$2.99
- Download PDF (up to 500 pages)$4.99
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- PDFDarkMode Pro$9.99
- Download PDF (500+ pages)$9.99
HTML Reader Offline
- A Cup of Coffee$0.99









