# PixelCalc vs PDF Maker & Reader Pro

The clearest difference is update cadence: PDF Maker & Reader Pro at every 3 weeks against PixelCalc's every 3 months. PDF Maker & Reader Pro also leads on price ($1.99 vs $2.99). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

PixelCalc costs $2.99 and PDF Maker & Reader Pro $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PixelCalc ships an update every 3 months, PDF Maker & Reader Pro every 3 weeks. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PixelCalc | PDF Maker & Reader Pro |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | — | **[4.3 (12 ratings)](https://appshunter.io/ios/app/pdf-maker-and-reader-pro/id1344475663/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | **41.7% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 4 MB | 14 MB |
| Requires iOS | 11.0 | **10.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Lullie](https://appshunter.io/developer/370571602) | [NAOAKI SEKIGUCHI](https://appshunter.io/developer/1146328819) |

## What reviewers say

### PixelCalc

[App page](https://appshunter.io/ios/app/pixelcalc/id370571599)

This tool helps graphic designers and others convert image dimensions between pixels and inches at various resolutions. It also features a proportional calculator for accurate resizing and reference charts for print sizes and camera settings.

**Highlights:** Pixel to Inch conversion, Inch to Pixel conversion, Resolution adjustment, Proportional calculator for resizing, Print size reference charts, Camera shutter speed chart

**Features:** Vision Pro support

**In-app purchases:** none


### PDF Maker & Reader Pro

[App page](https://appshunter.io/ios/app/pdf-maker-and-reader-pro/id1344475663)

Create and edit PDF documents on your iPhone and iPad. Add text, photos, maps, and diagrams to new or existing PDFs. Easily share your creations via email or cloud storage.

**Highlights:** Create new PDF documents, Edit existing PDFs, Add text, photos, and maps, Input manually or with keyboard, Support for Apple Pencil, Share via email and cloud storage

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

**In-app purchases:** none


## Frequently asked questions

### Is PixelCalc free?

PixelCalc costs $2.99, with no in-app purchases.

### Is PDF Maker & Reader Pro free?

PDF Maker & Reader Pro costs $1.99, with no in-app purchases.

### Do PixelCalc or PDF Maker & Reader Pro have ads?

Neither PixelCalc nor PDF Maker & Reader Pro shows ads.

### Which is updated more often, PixelCalc or PDF Maker & Reader Pro?

PixelCalc ships an update every 3 months, and PDF Maker & Reader Pro every 3 weeks. Most recently, PixelCalc was updated on October 8, 2026 and PDF Maker & Reader Pro on October 6, 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.*