PDF Reader vs Best Proportion Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Reader
This app offers a superior PDF reading experience with its innovative Liquid Mode, which optimizes documents for mobile screens. It also provides robust tools for annotating, signing, managing, and sharing your PDF files, catering to both work and study needs.
- Liquid Mode for optimized mobile reading
- Annotation tools (pencil, text, highlighting)
- Handwritten signature insertion
- File management (move, merge, copy, delete)
- Cloud service integration (Wondershare, iCloud)
- Create blank PDFs and folders
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PDFelement - PDF Reader is a PDF reader using the latest technology. The newly connected Liquid Mode function allows you to enjoy the best reading experience. In addition, there are various annotation tools, file management, signature, Various functions such as cloud services can meet your PDF needs in work and study. PDF VIEWER • Liquid Mode gives you the best PDF reading experience • Star files to find them quickly • Easily locate recently accessed files in the "Recent" list. • Enter the page number to navigate to the desired page for viewing LIQUID MODE • Get the best PDF Reading experience with Liquid Mode • PDF document fully fits the mobile phone screen, no need to zoom in and out repeatedly. • Easily adjust brightness, font size,style, and spacing. ANNOTATE • Using Pencil to annotate like writing on the paper • Add text annotations, freely modify the text and background, border colors, choose the appropriate font and font size. • Supports many annotating tools like highlighting, underlining, squiggly lines, or strikethroughs. MANAGE • Move, merge, copy or delete files SIGNATURE • Enables handwritten signatures to be inserted anywhere within the document, while also offering the ability to zoom in and out for greater flexibility. • Built-in commonly used stamps CREATE • Quickly create completely blank PDF documents • Creat blank folders. SHARE • Sharing document content with others is just a click away with capture feature. • Select sentence(s) or pragraph(s) to share CLOUD SERVICE • PDF Reader supports uploading or downloading docs via computer, Wondershare document cloud and iCloud. Please note that this app only supports editing native PDF files. It does not support editing scanned or raster PDF. If you find you cannot edit text in PDF, please check if it is scanned PDF. Thank you! ---------------------------------------------------------------------------------------- Need HELP? Please contact us! We'll feedback to you ASAP. Email: pdfelement@wondershare.com Support Center： http://support.wondershare.com Forum： http://forum.pdf.wondershare.com Official Website： https://pdf.wondershare.com If you think this App helps you, your positive review in the App Store would be much appreciated.
Best Proportion Calc
Easily solve proportion problems with a simple and intuitive interface. This app uses the cross product method for quick and accurate calculations across various fields like finance and science. It's available offline and free to use.
- Intuitive proportion calculation
- Cross product method for solving equations
- Versatile for finance, science, and more
- Offline functionality
- Free to use
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Dive into the world of math without the hassle with our super rule of three calculator! Whether you're an intrepid student, a numbers whiz, or just curious, our app is here to make proportion calculations as easy as child's play, thanks to the genius cross product method. Why our calculator is great: Intuitive Calculation: No more headaches! Enter your values, let our calculator do its magic, and voilà, your results are there! Product in Turbo Cross: Goodbye to headaches with complicated equations! Our app uses the cross product method to solve everything from simple equations to crazy puzzles. Versatile: Whether you need to solve problems related to finance, science, or other fields, our app offers exceptional versatility. Offline and Free as Air: Wherever you are, our app follows you. No need for Internet, no limits. Get ready to experience a mathematical adventure like never before. Download our rule of three calculator now and let the math magic happen!
Screenshots
Verdict
The clearest difference is rating: Best Proportion Calc at 5.0 against PDF Reader's 4.3. Best Proportion Calc also leads on review sentiment (100% vs 77%). PDF Reader's advantage is ads (none vs shown) and ratings volume (3.9K vs 4). On price, update cadence, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
Best Proportion Calc holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: PDF Reader has 3.9K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 77% of PDF Reader's written reviews are positive against 100% of Best Proportion Calc's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.
| Parameter | PDF Reader | Best Proportion Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (3.9K ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 76.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 3.9K — better | 4 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 173 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Wondershare Technology (Hunan) Co.,Ltd. | Denis Belmont |
Customer experience
PDF Reader
Best Proportion Calc
Bugs and requests
PDF Reader
Reported bugs
4 issues- Text boxes appearing randomly
- Inability to select/edit text in some PDFs
- Scrolling issues and page loading delays
- Incompatibility with certain PDF formats
Requested features
5 requests- Ability to edit text formatting (font, size, color)
- Support for multiple open documents
- Improved Apple Pencil integration
- Bookmark/favorite feature for frequently used PDFs
- Expanded cloud storage integration (OneDrive, Google Drive, etc.)
Best Proportion Calc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PDF Reader
No in-app purchases
Best Proportion Calc
No in-app purchases
Questions
Is PDF Reader free?
Is Best Proportion Calc free?
Which has better reviews, PDF Reader or Best Proportion Calc?
Do PDF Reader or Best Proportion Calc have ads?
Which is updated more often, PDF Reader or Best Proportion Calc?
Other comparisons
