# NanoTubAR vs Crys

The clearest difference is update cadence: Crys at every 4 days against NanoTubAR's every 59 months. On price, ads, 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.

NanoTubAR ships an update every 59 months, Crys every 4 days. The most recent releases landed on October 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | NanoTubAR | 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 | No | No |
| Update frequency | Every 59 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 121 MB | 8 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MD. USE INNOVATIONS SL](https://appshunter.io/developer/1292343455) | [子铭 叶](https://appshunter.io/developer/6784052907) |

## What reviewers say

### NanoTubAR

[App page](https://appshunter.io/ios/app/nanotubar/id1549708302)

**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 NanoTubAR free?

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

### Is Crys free?

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

### Do NanoTubAR or Crys have ads?

Neither NanoTubAR nor Crys shows ads.

### Which is updated more often, NanoTubAR or Crys?

NanoTubAR ships an update every 59 months, and Crys every 4 days. Most recently, NanoTubAR was updated on October 27, 2026 and Crys on October 7, 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.*