# DeviceWallpaper vs 材料力学

The clearest difference is ads: DeviceWallpaper at none against 材料力学's shown. DeviceWallpaper also leads on update cadence (weekly vs every 2 months) and iOS requirement (8.0 vs 15.5). 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.

DeviceWallpaper ships an update weekly, 材料力学 every 2 months. The most recent releases landed on September 16, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | DeviceWallpaper | 材料力学 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 months |
| Size | 25 MB | 8 MB |
| Requires iOS | **8.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kensuke Hoshikawa](https://appshunter.io/developer/733552122) | [Risako Asai](https://appshunter.io/developer/1671273580) |

## What reviewers say

### DeviceWallpaper

[App page](https://appshunter.io/ios/app/devicewallpaper/id1226955020)

**In-app purchases:** none


### 材料力学

[App page](https://appshunter.io/ios/app/id1643386130)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DeviceWallpaper free?

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

### Is 材料力学 free?

材料力学 is free to download, with no in-app purchases.

### Do DeviceWallpaper or 材料力学 have ads?

材料力学 shows ads; DeviceWallpaper does not.

### Which is updated more often, DeviceWallpaper or 材料力学?

DeviceWallpaper ships an update weekly, and 材料力学 every 2 months. Most recently, DeviceWallpaper was updated on September 16, 2026 and 材料力学 on June 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.*