Comparison

Calculator Pro vs PDF OCR Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Percent calculations
  • Constant calculations
  • Exponential calculations
  • Compound interest calculations
  • Customizable themes
  • Customizable display
  • Decimal rounding settings
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Calculator Pro2 screens
PDF OCR Pro4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Calculator Pro versus PDF OCR Pro: the parameters behind the verdict, then further details
ParameterCalculator ProPDF OCR Pro
Price$6.99Free — better
Rating3.6 (5 ratings)5.0 (6 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings56 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size25 MB6 MB
Age rating4+17+
Developerwoodsmall inc.Layerz Corp.

Customer experience

Calculator Pro

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

PDF OCR Pro

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Calculator Pro

No in-app purchases

None

PDF OCR Pro

No in-app purchases

Questions

Is Calculator Pro free?
Calculator Pro costs $6.99, with no in-app purchases.
Is PDF OCR Pro free?
PDF OCR Pro is free to download, with no in-app purchases.
Which has better reviews, Calculator Pro or PDF OCR Pro?
PDF OCR Pro is rated higher. Calculator Pro averages 3.6 out of 5 from 5 ratings, while PDF OCR Pro averages 5.0 from 6 ratings.
Do Calculator Pro or PDF OCR Pro have ads?
Neither Calculator Pro nor PDF OCR Pro shows ads.
Which is updated more often, Calculator Pro or PDF OCR Pro?
Calculator Pro ships an update every 3 months, and PDF OCR Pro fortnightly. Most recently, Calculator Pro was updated on October 9, 2026 and PDF OCR Pro on October 1, 2026.

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