# Luban Ruler - Lucky Ruler

> Feng shui measurement tool for construction and interior design. (iPhone/iPad app by Xuan Phuong Pham.)

- Source: https://appshunter.io/ios/app/luban-ruler-lucky-ruler/id1393987772 (this page in markdown: same URL + `.md`)
- Developer: [Xuan Phuong Pham](https://appshunter.io/developer/1265611591)
- Category: Productivity, Reference
- Price: Free with in-app purchases
- Rating: 2.30/5 from 3 App Store ratings · 49 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 33 MB
- Languages: American English, Chinese (Simplified, China), Vietnamese
- Released: 2018-07-27
- Data updated: 2026-06-11
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/luban-ruler-lucky-ruler/id1393987772/reviews.md

## What is Luban Ruler?

LuBan Ruler is the first ever completed and applied set of rulers, which was coordinatedly researched and developed by Master Tam Nguyen and the Eastern Culture Research and Development Institute. The set is combined with 3 rulers, which are used for measuring and calculating the span/gap in items in constructions, ideally for applying fengshui to bring in money and blessing for the occupants.
The app is designed to run perfectly on mobile phones and tablets using iOS from 9.0
LuBan Ruler is ideal for those that are experts, practitioners, researchers in fengshui, as well as architects and carpenters to indicate the appropriate fengshui measurements for things. 
Features:
- The dimensions’ indication are based on LuBan Book 
- Allow users to test the dimensions on 3 types of ruler
- Measure the solid span in items used in the afterlife
- Measure the solid span in items used in the land of the living 
- Measure the gap inside 
- Compare and contrast with other fengshui measurements 
We hope you will be satisfied with this app.

## Key features

- Three types of LuBan rulers
- Measures spans and gaps
- Feng shui application
- Construction measurements
- Afterlife and living item measurements
- Comparison with other feng shui measurements

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Go Premium | $1.99 | one-time |


## Recent user reviews (10 of 49)

All indexed reviews: https://appshunter.io/ios/app/luban-ruler-lucky-ruler/id1393987772/reviews.md

### 1/5 — Như cc

*2026-01-31, version 1.4.2*

Ứng dụng như cl, quảng cáo quá phiền

### 5/5 — Rất hay

*2025-08-08, version 1.4.2*

Rất hay khi các thước lỗ ban ( thước kéo ) không có Thông Thuỷ

### 1/5 — M định hack cả fb à

*2025-01-03, version 1.4.2*

Cm thằng ad app này nó định hack cả fb của tôi m.n à. Mới nhập sđt cái tối thấy báo có ng đăng nhập vào tài khoản

### 5/5 — ok

*2024-10-08, version 1.4.2*

ok

### 4/5 — Rat huu ich

*2024-03-08, version 1.4.2*

Giokhong con lo lang khi co viec xay dung vi da co thuoc lo ban rat tien dung

### 1/5 — app tệ

*2023-11-16, version 1.4.2*

App mẹ j chưa kịp xem đã qc

### 5/5 — Mua bản cao cấp không quảng cáo

*2023-10-20, version 1.4.2*

Mình cần mua bản cao cấp khg có quảng cáo vì khi cần quảng cáo không tắt được rất phiền

### 1/5 — Thước không chính xác

*2023-06-12, version 1.4.2*

Thước đo phong thuỷ không chính xác dễ gây hậu quả nghiêm trọng

### 1/5 — thước sai

*2023-03-15, version 1.4.2*

thước sai so với thước thật, gây ảnh hưởng rất lớn tới việc sử dụng, sai lệch trong công việc, không nên tải

### 1/5 — Quảng cáo quá nhiều

*2022-11-21, version 1.4.2*

Quảng cáo nhiều quá

## Frequently asked questions about Luban Ruler

### What does the Luban Ruler app do?

The Luban Ruler app offers a set of three specialized rulers based on the LuBan Book. It helps users measure and calculate spans and gaps in construction and other items, applying feng shui principles to bring good fortune.

### What are the key features of the Luban Ruler app?

Key features include the use of three distinct LuBan rulers, the ability to measure solid spans in items for both the afterlife and the land of the living, measuring internal gaps, and comparing these measurements with other feng shui practices.

### Is the Luban Ruler app free to use?

The app is free to download and use, but it does offer in-app purchases, suggesting that some features or content may require payment.

### What devices is the Luban Ruler app compatible with?

The app is designed to run perfectly on mobile phones and tablets using iOS version 9.0 and above.

### Who would benefit most from using the Luban Ruler app?

This app is ideal for experts, practitioners, and researchers in feng shui, as well as architects and carpenters. It helps them indicate appropriate feng shui measurements for various items and projects.

## Version history (last 5 releases)

### 1.4.2 — 2022-02-08

+ update notification manager

### 1.4.1 — 2021-11-30

+ add AdMob

### 1.4 — 2020-04-14

+ Update account login/registration function

### 1.3 — 2018-11-29

- Bug fixes and performance improvements

### 1.2 — 2018-11-20

- Bug fixes and performance improvements

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## More apps by Xuan Phuong Pham

- [La Ban Viet](https://appshunter.io/ios/app/la-ban-viet/id1265611592)
- [PHONG THỦY TAM NGUYÊN](https://appshunter.io/ios/app/phong-thuy-tam-nguyen/id1583721596)

All apps by Xuan Phuong Pham: https://appshunter.io/developer/1265611591

## Related topics

[xuan phuong pham](https://appshunter.io/ios/topics/xuan-phuong-pham)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*