# 黑云箱唛 vs Unit Converter Simple

The clearest difference is ads: 黑云箱唛 at none against Unit Converter Simple's shown. 黑云箱唛 also leads on update cadence (every 2 weeks vs every 10 months). Unit Converter Simple's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

黑云箱唛 ships an update every 2 weeks, Unit Converter Simple every 10 months. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 黑云箱唛 | Unit Converter Simple |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/unit-converter-simple/id1531846614/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 10 months |
| Monetization | — | Ad-supported |
| Size | 63 MB | 18 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ashcloud Solution Co.,Ltd](https://appshunter.io/developer/1556600685) | [Kouji Yamauchi](https://appshunter.io/developer/1519365107) |

## What reviewers say

### 黑云箱唛

[App page](https://appshunter.io/ios/app/id1523027133)

**In-app purchases:** none


### Unit Converter Simple

[App page](https://appshunter.io/ios/app/unit-converter-simple/id1531846614)

Easily convert between various units of measurement for length, weight, volume, and more. View converted values in a convenient list and customize the display to show only the units you need. Supports a wide range of common and specialized units.

**Highlights:** Converts length, weight, area, volume, and more, Displays converted values in a list, Customizable unit visibility, Supports a wide variety of units, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 黑云箱唛 free?

黑云箱唛 is free to download, with no in-app purchases.

### Is Unit Converter Simple free?

Unit Converter Simple is free to download, with no in-app purchases.

### Do 黑云箱唛 or Unit Converter Simple have ads?

Unit Converter Simple shows ads; 黑云箱唛 does not.

### Which is updated more often, 黑云箱唛 or Unit Converter Simple?

黑云箱唛 ships an update every 2 weeks, and Unit Converter Simple every 10 months. Most recently, 黑云箱唛 was updated on October 27, 2026 and Unit Converter Simple on November 3, 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.*