PDF Reader vs Knife Sharpening
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
PDF Reader
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- Read PDFs Without Touching the Screen AutoScroll PDF Reader lets you read documents effortlessly. Pages scroll automatically at your pace, so you can focus on content β not swiping. Perfect for students, professionals, and anyone who reads long PDFs. - Key Features Auto-Scroll Reading Smooth automatic scrolling Adjustable speed to match your reading style Ideal for hands-free reading Document Scanner Scan physical documents using your camera Convert scans into clean PDFs instantly Save and read scanned documents inside the app Smart PDF Reader Fast and lightweight Works with large PDF files Clean, distraction-free interface Designed for Focus Minimal UI No clutter Built for long reading sessions -Who Is This For? Students reading notes and textbooks Professionals reviewing documents Anyone tired of constant scrolling -Privacy Friendly Your documents stay on your device. We donβt upload or track your files. - Simple. Fast. Useful. If you read PDFs every day, this is the reader youβll love.
Knife Sharpening
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A well-sharpened blade is easy to appreciate, yet the small moments behind it are often forgotten. The stone that worked especially well, the condition of the edge before sharpening, or the afternoon spent bringing an old tool back into use quietly disappear as newer tasks take their place. After enough time, even familiar knives begin to blur together, making it difficult to remember what was done and when. A personal collection gives every blade its own identity without turning the process into paperwork. Categories naturally separate kitchen knives, outdoor equipment, workshop tools, and everyday favorites, while photographs preserve details that words rarely capture. Sharpening dates remain connected to each item, creating a clear history that is pleasant to revisit before the next session. Looking through earlier entries often recalls not only the work itself but also the satisfaction of restoring something with patience and attention. Little by little, the collection becomes a reflection of craftsmanship, quiet practice, and respect for tools that continue to serve year after year.
Screenshots
Verdict
The clearest difference is in-app purchases: Knife Sharpening at none against PDF Reader's 1. Knife Sharpening also leads on 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. PDF Reader sells 1 one-off in-app purchase. Knife Sharpening asks for nothing beyond the download.
| Parameter | PDF Reader | Knife Sharpening |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | β |
| Ads | Yes | No β better |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 16.6 | 16.0 β better |
| Further details β not scored | ||
| Size | 9 MB | 4 MB |
| Age rating | 12+ | 4+ |
| Developer | Rajesh Ray | Jack Kelley |
In-app purchases
PDF Reader
- Premium Lifetime$9.99
Knife Sharpening
No in-app purchases
Questions
Is PDF Reader free?
Is Knife Sharpening free?
Do PDF Reader or Knife Sharpening have ads?
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