# Lithium Cloud IoT vs PSRayTracing

The clearest difference is update cadence: Lithium Cloud IoT at every 3 weeks against PSRayTracing's every 30 months. Lithium Cloud IoT also leads on iOS requirement (12.0 vs 17). 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.

Lithium Cloud IoT ships an update every 3 weeks, PSRayTracing every 30 months. The most recent releases landed on September 17, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Lithium Cloud IoT | PSRayTracing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/psraytracing/id6468944135/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 30 months |
| Monetization | — | Free |
| Size | 39 MB | 29 MB |
| Requires iOS | **12.0** | 17 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [华瑞物联](https://appshunter.io/developer/1136617898) | [Benjamin Summerton](https://appshunter.io/developer/1711000761) |

## What reviewers say

### Lithium Cloud IoT

[App page](https://appshunter.io/ios/app/lithium-cloud-iot/id6467621156)

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

**In-app purchases:** none


### PSRayTracing

[App page](https://appshunter.io/ios/app/psraytracing/id6468944135)

This application provides a graphical interface for a ray tracing engine, designed to render images faster than reference code. It includes features like threading and render progress visualization, based on "Ray Tracing in One Weekend" books.

**Highlights:** GUI frontend for ray tracing, Faster rendering than reference code, Threading support, Render progress visualization, Toggle-able features, Based on "Ray Tracing in One Weekend"

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

**In-app purchases:** none


## Frequently asked questions

### Is Lithium Cloud IoT free?

Lithium Cloud IoT is free to download, with no in-app purchases.

### Is PSRayTracing free?

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

### Do Lithium Cloud IoT or PSRayTracing have ads?

Neither Lithium Cloud IoT nor PSRayTracing shows ads.

### Which is updated more often, Lithium Cloud IoT or PSRayTracing?

Lithium Cloud IoT ships an update every 3 weeks, and PSRayTracing every 30 months. Most recently, Lithium Cloud IoT was updated on September 17, 2026 and PSRayTracing on September 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.*