# 东方仿真NetTrmp移动学习 vs cella

The clearest difference is in-app purchases: 东方仿真NetTrmp移动学习 at none against cella's 1. 东方仿真NetTrmp移动学习 also leads on iOS requirement (8.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. cella sells 1 one-off in-app purchase. 东方仿真NetTrmp移动学习 asks for nothing beyond the download.

东方仿真NetTrmp移动学习 ships an update every 3 weeks, cella every 10 days. The most recent releases landed on October 19, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 东方仿真NetTrmp移动学习 | cella |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cella-crystal-viewer/id6790140743/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | — | Freemium |
| Size | 50 MB | 71 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Beijing East Simulation&Control Technology Co.Ltd](https://appshunter.io/developer/1111054740) | [武汉回到未来科技有限公司](https://appshunter.io/developer/1891400712) |

## What reviewers say

### 东方仿真NetTrmp移动学习

[App page](https://appshunter.io/ios/app/nettrmp/id1149765142)

**Features:** macOS Compatibility

**In-app purchases:** none


### cella

[App page](https://appshunter.io/ios/app/cella-crystal-viewer/id6790140743)

Explore crystal structures in interactive 3D. Visualize atomic arrangements, view different molecular models, and access a curated atlas of common materials. Supports CIF file import and export with a one-time purchase.

**Highlights:** Interactive 3D crystal exploration, Fifteen visual Cell Notes, Curated structure atlas, Multiple view modes (ball-and-stick, space-filling), Unit cell and (hkl) plane visualization, CIF file import and export (Pro), No ads, tracking, or analytics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| cella Pro | $5.99 | one-time |


## Frequently asked questions

### Is 东方仿真NetTrmp移动学习 free?

东方仿真NetTrmp移动学习 is free to download, with no in-app purchases.

### Is cella free?

cella is free to download, with in-app purchases available.

### Do 东方仿真NetTrmp移动学习 or cella have ads?

Neither 东方仿真NetTrmp移动学习 nor cella shows ads.

### Which is updated more often, 东方仿真NetTrmp移动学习 or cella?

东方仿真NetTrmp移动学习 ships an update every 3 weeks, and cella every 10 days. Most recently, 东方仿真NetTrmp移动学习 was updated on October 19, 2026 and cella on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*