# BT21 Wallpapers vs UTONMOS

The clearest difference is rating: BT21 Wallpapers at 4.4 against UTONMOS's 3.0. BT21 Wallpapers also leads on in-app purchases (none vs 3) and ratings volume (72 vs 2). UTONMOS's advantage is update cadence (fortnightly vs every 11 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. UTONMOS sells 3 one-off in-app purchases. BT21 Wallpapers asks for nothing beyond the download.

BT21 Wallpapers holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: BT21 Wallpapers has 72 ratings behind it against 2, so its average is the more settled of the two.

BT21 Wallpapers ships an update every 11 months, UTONMOS fortnightly. The most recent releases landed on October 28, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | BT21 Wallpapers | UTONMOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (72 ratings)](https://appshunter.io/ios/app/bt21-wallpapers/id1591014295/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/utonmos/id1598098399/reviews) |
| Number of ratings | **72** | 2 |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 91 MB | 73 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ajay Gorasiya](https://appshunter.io/developer/1455174866) | [Shanghai Hei Software Co., Ltd.](https://appshunter.io/developer/1317191663) |

## What reviewers say

### BT21 Wallpapers

[App page](https://appshunter.io/ios/app/bt21-wallpapers/id1591014295)

Discover a vast collection of adorable 3D wallpapers featuring BT21 characters for your phone and tablet. Save, download, and share your favorite designs to personalize your home and lock screens.

**Highlights:** Large collection of 3D BT21 wallpapers, High-quality premium images, Save and download wallpapers, Share with friends, Compatible with 99% of devices, User-friendly interface

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

**In-app purchases:** none


### UTONMOS

[App page](https://appshunter.io/ios/app/utonmos/id1598098399)

This app fosters a Web 3.0 ecosystem centered around "Play-To-Create," enabling users to claim data ownership on the blockchain. It aims to build a social metaverse and a new digital era through its innovative chain game ecology.

**Highlights:** Play-To-Create ecosystem, Web 3.0 integration, Blockchain data ownership, Social metaverse, Chain game ecology

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 108NFR币 | $15.99 | one-time |
| 308NFR币 | $47.99 | one-time |
| 618NFR币 | $94.99 | one-time |


## Frequently asked questions

### Is BT21 Wallpapers free?

BT21 Wallpapers is free to download, with no in-app purchases.

### Is UTONMOS free?

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

### Which has better reviews, BT21 Wallpapers or UTONMOS?

BT21 Wallpapers is rated higher. BT21 Wallpapers averages 4.4 out of 5 from 72 ratings, while UTONMOS averages 3.0 from 2 ratings.

### Do BT21 Wallpapers or UTONMOS have ads?

Neither BT21 Wallpapers nor UTONMOS shows ads.

### Which is updated more often, BT21 Wallpapers or UTONMOS?

BT21 Wallpapers ships an update every 11 months, and UTONMOS fortnightly. Most recently, BT21 Wallpapers was updated on October 28, 2026 and UTONMOS on October 22, 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.*