pdfManager vs CalculatorX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
pdfManager
This app allows you to store, view, and manage PDF files on your portable device. It supports password-protected documents, conversion to images, and sharing via cloud services. You can also print specific sections or entire pages.
- Store and view PDF files
- Convert PDF to JPG/PNG
- Share PDFs via cloud services
- Print PDF pages
- View password-protected PDFs
- Offline PDF viewing
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"pdfManager" is a "PDF" file reader. With "pdfManager" you can: 1) store the PDF files into your portable device 2) display PDF files at all times and under all conditions of work 3) convert PDF files (or a part of a page of the PDF file) into an image (JPG / PNG) 4) share the PDF documents saved in the archive of pdfManager with DROPBOX or other applications installed on the device 5) print a pages of the PDF file (or a detail of interest of a page of PDF files) using the print button of pdfManager (AirPrint) 6) load and visualize the password-protected PDF documents * The software does not need an internet connections to visualize PDF documents: each PDF file is stored on the mobile device (using the technology "iTunes File Sharing" or "Open In") and can be read by the software itself. * The PDF reader works like the integrated image viewer of the device, you can then: - Zoom IN / OUT of the document (ZOOM INFINITE) by dragging two fingers on the screen (each time you use the ZOOM INFINITE the PDF page is redrawn again ensuring the highest possible quality of visualization, even if the smallest details are visualized to full screen) - move the document (PAN TOOL) by dragging one finger across the screen - reset the current settings of zoom and pan with a double-tap - change quickly the PDF pages using the two buttons "next page" and "previous page" or typing the page number, using the keypad of the device - load and visualize the PDF files when You need: all the PDF files are stored in the pdfManager archive and are displayed in alphabetical order - save an infinite number of PDF files in the pdfManager archive (until the physical memory of the device is ended) - You can display PDF document using Portrait or Landscape orientation - You can view the PDF document using the slideshow feature (you can choose the transition time between a page and the next one) Examples of use for: 1) iWork users: Pages, Keynotes, Numbers 2) MS Office users: Word, Excel, Powerpoint 3) CAD users (technical drawings) 4) etc... -> convert to PDF files your documents/technical drawings/CAD projects, copy them into pdfManager archive (using the technology "iTunes File Sharing" or "Open In"), load and visualized all the stored PDF files with "pdfManager”, when You want. With "pdfManager" you will have always and everywhere your documents, technical drawings, CAD projects, manuals, notes, etc...
CalculatorX
A fast and customizable calculator app that allows users to personalize themes, button styles, and view calculation history in real-time. Offers various display options and sound feedback for an enhanced user experience.
- Real-time calculation history
- Customizable button colors and shapes
- Multiple themes and light/dark modes
- Decimal precision control
- Exportable calculation history
- Sound effects and voice feedback
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Calculator X is a lightweight and fast calculator designed for efficient computing. Quickly change themes with simple swipe gestures, customize button colors, spacing, and shapes, and view your calculation history in real time. Features: Compact and fast – perform calculations instantly User-friendly gestures – swipe up or down to switch and customize calculator themes Customizable buttons – change button color, spacing, and shape Real-time calculation history – view your previous calculations instantly Export history – save and export your calculation history for easy reference Decimal precision control – choose the number of decimal places Thousands separator – view numbers clearly with thousands grouping Highlighted results – calculation results are displayed prominently Multiple themes – dozens of beautiful calculator themes to choose from Sound effects and voice feedback – support for button sounds and real voice responses Light and dark modes – switch easily to match your preference More features coming soon – we are constantly improving CalculatorX CalculatorX combines speed, customization, and fun to create the perfect calculation experience.
Screenshots
Verdict
The clearest difference is price: CalculatorX at Free against pdfManager's $0.99. CalculatorX also leads on update cadence (every 6 days vs every 4 months) and device support (3 vs 1). pdfManager's advantage is in-app purchases (none vs 1). On rating, ratings volume, ads and iOS requirement 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
CalculatorX is free to download; pdfManager costs $0.99 up front. CalculatorX sells 1 one-off in-app purchase. pdfManager asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.0 for pdfManager against 4.0 for CalculatorX. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
pdfManager ships an update every 4 months, CalculatorX every 6 days. The most recent releases landed on August 31, 2026 and September 20, 2026 respectively.
| Parameter | pdfManager | CalculatorX |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) | 4.0 (2 ratings) |
| Positive reviews | — | 92.9% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 4 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 12 MB |
| Age rating | 4+ | 12+ |
| Developer | Gianluca Natalini | 学良 靳 |
Customer experience
pdfManager
CalculatorX
In-app purchases
pdfManager
No in-app purchases
CalculatorX
- Lifetime Premium$2.99





