# MediLex vs X

The clearest difference is price: X at Free against MediLex's $2.99. X also leads on iOS requirement (12.0 vs 14.2). MediLex's advantage is update cadence (every 2 months vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

X is free to download; MediLex costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MediLex ships an update every 2 months, X every 4 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | MediLex | X |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 168 MB | 79 MB |
| Requires iOS | 14.2 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Expert Vision](https://appshunter.io/developer/635809968) | [University of Oulu](https://appshunter.io/developer/1057902852) |

## What reviewers say

### MediLex

[App page](https://appshunter.io/ios/app/medilex/id1665459492)

**In-app purchases:** none


### X

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

**In-app purchases:** none


## Frequently asked questions

### Is MediLex free?

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

### Is X free?

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

### Do MediLex or X have ads?

Neither MediLex nor X shows ads.

### Which is updated more often, MediLex or X?

MediLex ships an update every 2 months, and X every 4 months. Most recently, MediLex was updated on October 27, 2026 and X on October 27, 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.*