# 单开开 vs 优博讯K31固件升级

The clearest difference is update cadence: 单开开 at every 11 days against 优博讯K31固件升级's every 4 months. 单开开 also leads on iOS requirement (13.0 vs 15.0). 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.

单开开 ships an update every 11 days, 优博讯K31固件升级 every 4 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 单开开 | 优博讯K31固件升级 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 4 months |
| Size | 57 MB | 0 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LinYi Whale Software Co., Ltd.](https://appshunter.io/developer/1559153930) | [UROVO TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1674303082) |

## What reviewers say

### 单开开

[App page](https://appshunter.io/ios/app/id6618138192)

**Features:** macOS Compatibility

**In-app purchases:** none


### 优博讯K31固件升级

[App page](https://appshunter.io/ios/app/k31/id6745995670)

**In-app purchases:** none


## Frequently asked questions

### Is 单开开 free?

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

### Is 优博讯K31固件升级 free?

优博讯K31固件升级 is free to download, with no in-app purchases.

### Do 单开开 or 优博讯K31固件升级 have ads?

Neither 单开开 nor 优博讯K31固件升级 shows ads.

### Which is updated more often, 单开开 or 优博讯K31固件升级?

单开开 ships an update every 11 days, and 优博讯K31固件升级 every 4 months. Most recently, 单开开 was updated on November 4, 2026 and 优博讯K31固件升级 on October 30, 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.*