# CloudLabs UARM Motion vs cella

The clearest difference is in-app purchases: CloudLabs UARM Motion at none against cella's 1. CloudLabs UARM Motion also leads on update cadence (every 3 days vs every 10 days) and iOS requirement (9.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. cella sells 1 one-off in-app purchase. CloudLabs UARM Motion asks for nothing beyond the download.

CloudLabs UARM Motion ships an update every 3 days, cella every 10 days. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | CloudLabs UARM Motion | 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 days** | Every 10 days |
| Monetization | — | Freemium |
| Size | 68 MB | 71 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Jiovany Orozco](https://appshunter.io/developer/1114670847) | [武汉回到未来科技有限公司](https://appshunter.io/developer/1891400712) |

## What reviewers say

### CloudLabs UARM Motion

[App page](https://appshunter.io/ios/app/cloudlabs-uarm-motion/id1633731341)

**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 CloudLabs UARM Motion free?

CloudLabs UARM Motion is free to download, with no in-app purchases.

### Is cella free?

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

### Do CloudLabs UARM Motion or cella have ads?

Neither CloudLabs UARM Motion nor cella shows ads.

### Which is updated more often, CloudLabs UARM Motion or cella?

CloudLabs UARM Motion ships an update every 3 days, and cella every 10 days. Most recently, CloudLabs UARM Motion was updated on October 7, 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.*