# AR鲁班尺 vs 語音鍵盤

The clearest difference is price: 語音鍵盤 at Free against AR鲁班尺's $0.29. 語音鍵盤 also leads on in-app purchases (none vs 7) and update cadence (every 2 months vs every 4 months). AR鲁班尺's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.0). On ads there is nothing between them.

語音鍵盤 is free to download; AR鲁班尺 costs $0.29 up front. AR鲁班尺 sells 7 in-app purchases, starting at $4.99 per month. 語音鍵盤 asks for nothing beyond the download.

AR鲁班尺 ships an update every 4 months, 語音鍵盤 every 2 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | AR鲁班尺 | 語音鍵盤 |
| --- | --- | --- |
| Price | $0.29 | **Free** |
| Rating | **[4.9 (82 ratings)](https://appshunter.io/ios/app/ar/id1384164285/reviews)** | — |
| Number of ratings | **82** | — |
| Positive reviews | 93.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Subscription | — |
| Size | 105 MB | 2 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [桐明 陈](https://appshunter.io/developer/1197339496) | [Wei Cheng Chen](https://appshunter.io/developer/1862953921) |

## What reviewers say

### AR鲁班尺

[App page](https://appshunter.io/ios/app/ar/id1384164285)

This app transforms your phone into a digital measuring tool, ideal for home buying, renting, and renovation. It offers customizable ruler lengths, unit conversions, and the ability to view CAD files and create floor plans. It also includes a feature to measure land area on a map.

**Highlights:** AR measurement with auspicious meanings, Customizable and preset ruler lengths, Multiple measurement units, View and analyze CAD files, Create floor plans, Map-based land area measurement

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月VIP会员 | $4.99 | per month |
| 年VIP会员 | $12.99 | per year |
| 移除广告 | $3.99 | one-time |
| 最长测量长度为2千米 | $4.99 | one-time |
| 46.08厘米尺长 | $4.99 | one-time |
| 50.4厘米尺长 | $4.99 | one-time |
| 解锁所有功能 | $19.99 | one-time |


### 語音鍵盤

[App page](https://appshunter.io/ios/app/ai/id6776642044)

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

**In-app purchases:** none


## Frequently asked questions

### Is AR鲁班尺 free?

AR鲁班尺 costs $0.29, and also offers in-app purchases.

### Is 語音鍵盤 free?

語音鍵盤 is free to download, with no in-app purchases.

### Do AR鲁班尺 or 語音鍵盤 have ads?

Neither AR鲁班尺 nor 語音鍵盤 shows ads.

### Which is updated more often, AR鲁班尺 or 語音鍵盤?

AR鲁班尺 ships an update every 4 months, and 語音鍵盤 every 2 months. Most recently, AR鲁班尺 was updated on October 16, 2026 and 語音鍵盤 on October 14, 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.*