# Taiwan Datum vs 鲁班尺 Pro

The clearest difference is price: Taiwan Datum at $1.99 against 鲁班尺 Pro's $19.99. Taiwan Datum also leads on update cadence (every 2 months vs every 5 months). 鲁班尺 Pro's advantage is review sentiment (100% vs 73%). On ads, in-app purchases, monetization model and device support there is nothing between them.

Taiwan Datum costs $1.99 and 鲁班尺 Pro $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Taiwan Datum ships an update every 2 months, 鲁班尺 Pro every 5 months. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Taiwan Datum | 鲁班尺 Pro |
| --- | --- | --- |
| Price | **$1.99** | $19.99 |
| Positive reviews | 72.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Paid | Paid |
| Size | 3 MB | 105 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HUNG HSUN LIN](https://appshunter.io/developer/482586427) | [桐明 陈](https://appshunter.io/developer/1197339496) |

## What reviewers say

### Taiwan Datum

[App page](https://appshunter.io/ios/app/taiwan-datum/id620301625)

This app measures coordinates in Taiwan using WGS84, TWD97, and TWD67 systems. It allows users to export data as CSV and attach photos, videos, and voice recordings to measurements.

**Highlights:** WGS84, TWD97, TWD67 coordinate systems, CSV data export, Attach photos, Attach videos, Attach voice records, Download media via iTunes

**Features:** Vision Pro support

**In-app purchases:** none


### 鲁班尺 Pro

[App page](https://appshunter.io/ios/app/pro/id1375474107)

This app transforms your phone into a professional measuring tool using AR. It helps test property layouts for buying, renting, or renovating, and provides auspicious meanings for measurements. Supports custom and standard ruler lengths, various units, and CAD file viewing.

**Highlights:** AR measurement with auspicious meanings, Customizable ruler lengths, Support for multiple measurement units, CAD file viewing (DWG compatibility), Area measurement (map, walking, driving), Real-time data saving

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

**In-app purchases:** none


## Frequently asked questions

### Is Taiwan Datum free?

Taiwan Datum costs $1.99, with no in-app purchases.

### Is 鲁班尺 Pro free?

鲁班尺 Pro costs $19.99, with no in-app purchases.

### Do Taiwan Datum or 鲁班尺 Pro have ads?

Neither Taiwan Datum nor 鲁班尺 Pro shows ads.

### Which is updated more often, Taiwan Datum or 鲁班尺 Pro?

Taiwan Datum ships an update every 2 months, and 鲁班尺 Pro every 5 months. Most recently, Taiwan Datum was updated on September 30, 2026 and 鲁班尺 Pro on October 8, 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.*