Calculator Pro vs PDF OCR Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator Pro
This app offers a stylish and functional calculator with advanced features like percent, constant, exponential, and compound interest calculations. Customize themes and decimal rounding for a personalized experience.
- Percent calculations
- Constant calculations
- Exponential calculations
- Compound interest calculations
- Customizable themes
- Customizable display
- Decimal rounding settings
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A simple, stylish calculator. One use of this free app, and you’ll never want to be without it. Percent calculations make calculating sales tax easy. Calculator supports the following features. [Percent Calculation] 500×5%25 500÷5%10000 500-5%475 500+5%525 [Constant Calculation] Constant calculations follow the Casio-style. After inputting the desired number, tap the desired operator twice to set it as the constant. Ex) When you want to constantly add 100 100++ 1000=1100 2000=2100 [Exponential Calculation] 5××=25 =125 =625 [Compound Interest Calculation] Ex) When calculating the yearly maturity on 0.5% (after tax) of $10,000 deposited yearly. 1.005×× 10000=10050 =10100.25 =10150.751 Calculator does not support function operations. It uses Sharp-style calculation formulas. [Main Functions] - Input up to 12 digits. - Supported for iPad. - Customizable themes. - Customizable display - Set the rounding of decimals - Set the rounding place of decimals - Constant calculation (Casio-style) URL Scheme: woodsmall-calculatorpro:// Made in Japan. © woodsmall inc.
PDF OCR Pro
This app offers a comprehensive suite of tools for managing PDF files. It allows you to extract text using OCR, convert PDFs to images, secure documents with passwords, and merge or split files. It also enables creating PDFs from images and converting webpages into PDF format, all while ensuring your data remains private through offline processing.
- Extract text with OCR
- Convert PDF to images
- Secure PDFs with passwords
- Merge or split PDFs
- Create PDFs from images
- Convert webpages to PDF
- Compress file size
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Struggling with PDF files? Say hello to PDFOCR—your all-in-one toolkit for managing and enhancing PDF documents! Whether you’re dealing with scanned PDFs without searchable text, or need specific features for better file sharing, PDFOCR makes it simple and efficient: • Extract Text with OCR: Convert scanned PDFs into searchable files by extracting embedded text. • Convert PDF to Images: Need images instead? Turn PDF pages into high-quality images with ease. • Secure Your PDFs: Add passwords or set permissions to control access, copying, or printing. • Merge or Split PDFs: Combine multiple PDFs into one, or split large documents as needed. • Create PDFs from Images: Batch your images into a single, polished PDF file. • Webpage to PDF: You can turn a long webpage into multiple PDF pages. Your Privacy Matters All tasks are performed offline, ensuring your documents are never uploaded to a server. Additional Features Include: • Compress file size without quality loss. • Extract specific text or pages from PDFs. • Remove security restrictions effortlessly. PDFOCR is continually updated with new tools to make your PDF tasks easier! Currently Available Tools: • OCR PDF • Manage Passwords & Permissions • Remove Security • Optimize File Size • Convert Images to PDF • Convert a Webpage to PDF • Merge or Split PDFs • Convert PDFs to Images • Extract TXT, RTF, or Specific Pages Have questions or feedback? Contact us anytime at support@layerz.app. Your perfect PDF assistant is here—try PDFOCR today!
Screenshots
Verdict
The clearest difference is price: PDF OCR Pro at Free against Calculator Pro's $6.99. PDF OCR Pro also leads on rating (5.0 vs 3.6) and update cadence (fortnightly vs every 3 months). Calculator Pro's advantage is iOS requirement (12.0 vs 17.0). On ratings volume, ads, 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
PDF OCR Pro is free to download; Calculator Pro costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
PDF OCR Pro holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 5 and 6 respectively.
Calculator Pro ships an update every 3 months, PDF OCR Pro fortnightly. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.
| Parameter | Calculator Pro | PDF OCR Pro |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 3.6 (5 ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 5 | 6 — better |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 25 MB | 6 MB |
| Age rating | 4+ | 17+ |
| Developer | woodsmall inc. | Layerz Corp. |
Customer experience
Calculator Pro
PDF OCR Pro
In-app purchases
Calculator Pro
No in-app purchases
PDF OCR Pro
No in-app purchases









