# Pascal vs Modify PDF Pro

The clearest difference is price: Modify PDF Pro at Free against Pascal's $2.99. Modify PDF Pro also leads on iOS requirement (15.0 vs 17.6). Pascal's advantage is update cadence (every 2 weeks vs every 6 months). On ads, in-app purchases and device support there is nothing between them.

Modify PDF Pro is free to download; Pascal costs $2.99 up front. Pascal sells 3 one-off in-app purchases and Modify PDF Pro sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Pascal ships an update every 2 weeks, Modify PDF Pro every 6 months. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Pascal | Modify PDF Pro |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.0 (23 ratings)](https://appshunter.io/ios/app/pascal-3-in-1-calculator/id828838134/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 68.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 75 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Wei](https://appshunter.io/developer/828838137) | [Jose Antonio Salinas Garcia](https://appshunter.io/developer/1803226958) |

## What reviewers say

### Pascal

[App page](https://appshunter.io/ios/app/pascal-3-in-1-calculator/id828838134)

This app offers a powerful 3-in-1 calculator experience, combining scientific, graphing, and programmer functionalities. The scientific calculator is free, while graphing and programmer modes require an in-app purchase, with trials available for testing.

**Highlights:** Scientific calculator (degree, radian, gradian modes), RPN mode, Graphing calculator with smart tape and adaptive sampling, Programmer calculator (8, 16, 32, 64-bit bitwise), Multiple numeral systems (binary, octal, decimal, hex), Unicode and ASCII character encoding

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Theme Pack | $0.99 | one-time |
| Graphing Calculator | $1.99 | one-time |
| Programmer Calculator | $1.99 | one-time |

**What reviewers like**

- ✨ Clean and modern design
- 🚀 Fast and responsive
- 👍 User-friendly interface
- 💡 Comprehensive functionality
- 🌟 Excellent for school/university

**What reviewers complain about**

- 💰 Graphing and programming features require payment
- ⌨️ No iPad Magic Keyboard support
- 🤔 RPN logic not easily discoverable
- 📉 Some users lost premium features after updates
- ⚠️ Potential for crashes after updates

**Reported bugs**

- Crashes after updates
- Premium features reverted to basic
- Cannot enter numbers with iPad Magic Keyboard
- RPN logic not selectable
- Key response slow or nonexistent on watch

**Requested features**

- Add RPN to Apple Watch app
- Improve iPad Magic Keyboard support
- Make themes free for all users
- Add a backspace button to Apple Watch app
- Add Arabic language support


### Modify PDF Pro

[App page](https://appshunter.io/ios/app/modify-pdf-pro/id6760251517)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smart OCR Mensual | $3.99 | per month |
| Smart OCR Anual | $34.99 | per year |
| Cuenta premium vitalicia | $69.99 | one-time |


## Frequently asked questions

### Is Pascal free?

Pascal costs $2.99, and also offers in-app purchases.

### Is Modify PDF Pro free?

Modify PDF Pro is free to download, with in-app purchases available.

### Do Pascal or Modify PDF Pro have ads?

Neither Pascal nor Modify PDF Pro shows ads.

### Which is updated more often, Pascal or Modify PDF Pro?

Pascal ships an update every 2 weeks, and Modify PDF Pro every 6 months. Most recently, Pascal was updated on October 13, 2026 and Modify PDF Pro on October 8, 2026.

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