# X vs Positioning Pro

The clearest difference is price: X at Free against Positioning Pro's $4.99. X also leads on iOS requirement (12.0 vs 15.0). Positioning Pro's advantage is update cadence (weekly vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

X is free to download; Positioning Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

X ships an update every 4 months, Positioning Pro weekly. Both last shipped on September 18, 2026.

## The numbers

| Metric | X | Positioning Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[5.0 (9 ratings)](https://appshunter.io/ios/app/positioning-pro/id6780101920/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | — | Paid |
| Size | 79 MB | 29 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [University of Oulu](https://appshunter.io/developer/1057902852) | [ASA AARON WALDEN](https://appshunter.io/developer/6780102102) |

## What reviewers say

### X

[App page](https://appshunter.io/ios/app/x-ray-scatter-sim/id6463718894)

**In-app purchases:** none


### Positioning Pro

[App page](https://appshunter.io/ios/app/positioning-pro/id6780101920)

This study tool helps radiologic technology students master radiographic positioning and technical factors. It offers practice modes, exam simulations, and custom routine building for comprehensive learning. Covers over 100 projections across various exam types.

**Highlights:** Radiographic positioning drills, Technical factors practice, Central ray angle drills, Practice Mode with instant feedback, SIM Mode for exam simulation, Custom routines and projections, Hard Mode for manual technique entry

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

**In-app purchases:** none


## Frequently asked questions

### Is X free?

X is free to download, with no in-app purchases.

### Is Positioning Pro free?

Positioning Pro costs $4.99, with no in-app purchases.

### Do X or Positioning Pro have ads?

Neither X nor Positioning Pro shows ads.

### Which is updated more often, X or Positioning Pro?

X ships an update every 4 months, and Positioning Pro weekly. Most recently, X was updated on September 18, 2026 and Positioning Pro on September 18, 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.*