# Element OTG vs Crys

The clearest difference is ads: Crys at none against Element OTG's shown. Crys also leads on update cadence (every 4 days vs monthly). Element OTG's advantage is iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Element OTG ships an update monthly, Crys every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Element OTG | Crys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/crys-cast/id6784123301/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free |
| Size | 25 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Japality Limited](https://appshunter.io/developer/1574046707) | [子铭 叶](https://appshunter.io/developer/6784052907) |

## What reviewers say

### Element OTG

[App page](https://appshunter.io/ios/app/element-otg/id6749494404)

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

**In-app purchases:** none


### Crys

[App page](https://appshunter.io/ios/app/crys-cast/id6784123301)

This app allows users to view and analyze crystal structures locally on their mobile devices. It supports various file formats and offers tools for inspecting atoms, bonds, and unit cells, with features for generating simulated PXRD patterns and morphology previews.

**Highlights:** Local structure viewing, Supports CIF, XYZ, PDB, MOL, SDF, MOL2, RES files, Inspect atoms, bonds, unit cells, Display styles and scope control, Fullscreen and PXRD presentation modes, Simulated PXRD pattern generation, BFDH morphology preview

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

**In-app purchases:** none


## Frequently asked questions

### Is Element OTG free?

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

### Is Crys free?

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

### Do Element OTG or Crys have ads?

Element OTG shows ads; Crys does not.

### Which is updated more often, Element OTG or Crys?

Element OTG ships an update monthly, and Crys every 4 days. Most recently, Element OTG was updated on October 30, 2026 and Crys on October 31, 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.*