# DOCSIOS vs Volume Shader

The clearest difference is ads: DOCSIOS at none against Volume Shader's shown. Volume Shader's advantage is update cadence (every 5 days vs every 10 days) and iOS requirement (18.0 vs 26.0). 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.

DOCSIOS ships an update every 10 days, Volume Shader every 5 days. The most recent releases landed on September 24, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | DOCSIOS | Volume Shader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/volume-shader/id6802010333/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 10 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jens Sproede](https://appshunter.io/developer/518324378) | [Shahid Ali](https://appshunter.io/developer/6802010335) |

## What reviewers say

### DOCSIOS

[App page](https://appshunter.io/ios/app/docsios/id6759523137)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Volume Shader

[App page](https://appshunter.io/ios/app/volume-shader/id6802010333)

Explore complex 3D fractal visualizations rendered natively on your iPhone or iPad. Test your device's GPU performance and check system states like thermal and battery.

**Highlights:** Native Metal GPU rendering, Mandelbulb ray marching, Device performance testing, System state monitoring, Interactive 3D exploration, Touch, haptic, and speaker checks

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

**In-app purchases:** none


## Frequently asked questions

### Is DOCSIOS free?

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

### Is Volume Shader free?

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

### Do DOCSIOS or Volume Shader have ads?

Volume Shader shows ads; DOCSIOS does not.

### Which is updated more often, DOCSIOS or Volume Shader?

DOCSIOS ships an update every 10 days, and Volume Shader every 5 days. Most recently, DOCSIOS was updated on September 24, 2026 and Volume Shader on September 10, 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.*