# Calculator Pro vs PDF OCR Pro

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.

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.

## The numbers

| Metric | Calculator Pro | PDF OCR Pro |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [3.6 (5 ratings)](https://appshunter.io/ios/app/calculator-pro-simple-app/id708077489/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/pdf-ocr-pro/id6738633268/reviews)** |
| Number of ratings | 5 | **6** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 25 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [woodsmall inc.](https://appshunter.io/developer/708077492) | [Layerz Corp.](https://appshunter.io/developer/1617729865) |

## What reviewers say

### Calculator Pro

[App page](https://appshunter.io/ios/app/calculator-pro-simple-app/id708077489)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### PDF OCR Pro

[App page](https://appshunter.io/ios/app/pdf-ocr-pro/id6738633268)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*