Lu Ban Ruler Downloads & RevenueLu Ban Ruler - Feng Shui · App Store
鲁班尺风水
Lu Ban Ruler - Feng Shui is #133 in Developer Tools Free in China and charting in 1 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperManh Nguyen
CategoryDeveloper Tools
Price38.00 CNY
Released
Rating★ 4.0 (3)
Version1.7
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)50k+ worldwide
Lu Ban Ruler - Feng Shui update history & changes
Last change · 11 events since 28 Oct 2024Full timeline ↓💰Now free✏️New iPad screenshots✏️New screenshots📦Updated to version 1.7🆕Its developer released another app: Debt Tracker & IOU: Meow Debt📈Entered the top 10📈Entered the top 100🆕First spotted by AppInsider📦Version 1.6
Full timeline · 11 events
- 💰Lu Ban Ruler - Feng Shui: now freeFree (was 38.00 CNY) · CN
- ✏️Lu Ban Ruler - Feng Shui: new iPad screenshots· CN
- ✏️Lu Ban Ruler - Feng Shui: new screenshots9 screenshots (was 9) · CN
- 📦Lu Ban Ruler - Feng Shui updated to version 1.7本次更新修复了尺面显示的一处问题。
【修复】
• 相邻两格同为吉（或同为凶）时，两格之间的分隔线缺失，看起来像一个长格，例如“义”与“官”、“病”与“离”，以及尺子进入下一个周期的交界处（“本”与“财”）。现在每个大格的边界都有分隔线，与小格之间一致，通水尺、鲁班尺、丁兰尺、门光尺四把尺及三种语言均已修正。尺寸、所在格位与吉凶结果均不变。
【改进】
• 使用指南中的截图已重新拍摄，与当前尺面一致。 - 🆕Lu Ban Ruler - Feng Shui: its developer released another app: Debt Tracker & IOU: Meow Debt
- 📈Lu Ban Ruler - Feng Shui entered the top 10Top Paid · Developer Tools · CN
- 📈Lu Ban Ruler - Feng Shui entered the top 100Top Grossing · Developer Tools · CN
- 📈Lu Ban Ruler - Feng Shui charting in a new countryFrance
- 🆕Lu Ban Ruler - Feng Shui first spotted by AppInsider#37 in Top Paid · Developer Tools · China
- 📦Lu Ban Ruler - Feng Shui version 1.6Meet Classic Luban, a fourth ruler for doors and gates. Choose which rulers appear and explore the rewritten User Guide.
NEW
• Classic Luban (46.08 cm): the Ming-Qing Luban ruler for the clear opening of doors and gates. Same sections, meanings, and Good/Bad markings as Yang Dwelling (42.9 cm), but a longer cycle, so a size can be Good on one and Bad on the other. Off by default; turn it on in Visible Rulers.
• Visible Rulers: show 1 to 4 rulers and drag the ≡ handle to reorder them. Your choice is saved. To open it, tap the sliders button next to “cm”, tap a ruler’s name in the left column, or use the side menu.
IMPROVED
• Rewritten User Guide: real screenshots in your language showing every button, a card per ruler with Good ranges and examples, and two illustrations comparing how to measure doors versus furniture and altars. Tap a picture to enlarge it.
• Redesigned side menu with LANGUAGE (VN / EN / CN) and HAPTICS at the bottom.
• Updated for iOS 27.
FIXED
• Typing a large size (e.g., 9000 mm) or tapping 0 to jump back to the start now lands the ruler exactly, and every ruler shows the correct result.
• Tapping “Luban Ruler” in the side menu while on the ruler screen no longer resets your measurement.
• Yang Dwelling (42.9 cm): the first sub-section of Separation is now named Long Confinement (formerly Chronic Illness), as in the Lu Ban Jing. It’s still Bad, so results are unchanged.… more - 🆕Lu Ban Ruler - Feng Shui released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.0 ★
3 ratings
Measured
Best rank now
#133
Developer Tools FreeMeasured
Lu Ban Ruler - Feng Shui at a glance
AI summary written from our chart and store data, 2026-11-02. It can be wrong: check the numbers above.
A paid utility app for carpenters and feng shui practitioners that digitally replicates the traditional Lu Ban ruler to instantly identify auspicious or inauspicious measurements for doors, furniture, and altars. The app is currently ranked #4 in China's Paid Developer Tools category and #39 in Grossing, indicating strong niche monetization despite being misclassified under developer tools rather than lifestyle or measurement utilities.
Similar apps: Tape Measure, Feng Shui Master, Ruler - Measurement Tool
Lu Ban Ruler - Feng Shui on the App Store
App details
App ID
6443977526
Publisher
Manh Nguyen
On the store since
Oct 2024
2 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
3
EN ZH VI
Size
2 MB
Also listed in
Lifestyle
Lu Ban Ruler - Feng Shui downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Lu Ban Ruler - Feng Shui's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| China | Developer ToolsFree | #133 |
Apps near Lu Ban Ruler - Feng Shui on the chart
Developer Tools Free, around #133.
Ratings
App Store, worldwide.
Rating
4.0 ★
3 ratings
Measured
Ratings
3
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
54/100
faster than 56% of Developer Tools apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Lu Ban Ruler - Feng Shui
From recent reviews.
About Lu Ban Ruler - Feng Shui
LUBAN RULER – The feng shui ruler in your pocket
The Luban ruler is essential when building doors, gates, altars, beds, cabinets or stairs. This app instantly tells you whether a measurement falls on a LUCKY or UNLUCKY segment, and suggests the nearest auspicious size — anytime, anywhere.
ALL THREE RULERS INCLUDED
• Clear Opening (52.2cm) – for the clear opening of doors and gates
• Yang Dwelling (42.9cm) – for stoves, beds, tables and furniture
• Yin Dwelling / Ding Lan (38.8cm) – for altars, shrines and graves
KEY FEATURES
• See the result of all three rulers at once
• Drag the ruler or type a measurement directly (mm/inch)
• Auspicious size suggestions: on an unlucky mark, the app tells you exactly how many mm to add or subtract to reach the nearest lucky one
• Haptic alert when a measurement crosses into an unlucky zone – measure without looking
• Quick-adjust buttons (−1mm / +1mm) and reset-to-zero
• Plain-language meaning for every segment
• Three languages: Vietnamese, English, Chinese
• Light & Dark mode
• Optimized for both iPhone and iPad
WHO IS IT FOR?
• Carpenters, builders and contractors
• Homeowners renovating, building or setting up an altar
• Anyone interested in feng shui
Works fully offline. No account required.
Download now so every dimension in your home is in harmony!
The Luban ruler is essential when building doors, gates, altars, beds, cabinets or stairs. This app instantly tells you whether a measurement falls on a LUCKY or UNLUCKY segment, and suggests the nearest auspicious size — anytime, anywhere.
ALL THREE RULERS INCLUDED
• Clear Opening (52.2cm) – for the clear opening of doors and gates
• Yang Dwelling (42.9cm) – for stoves, beds, tables and furniture
• Yin Dwelling / Ding Lan (38.8cm) – for altars, shrines and graves
KEY FEATURES
• See the result of all three rulers at once
• Drag the ruler or type a measurement directly (mm/inch)
• Auspicious size suggestions: on an unlucky mark, the app tells you exactly how many mm to add or subtract to reach the nearest lucky one
• Haptic alert when a measurement crosses into an unlucky zone – measure without looking
• Quick-adjust buttons (−1mm / +1mm) and reset-to-zero
• Plain-language meaning for every segment
• Three languages: Vietnamese, English, Chinese
• Light & Dark mode
• Optimized for both iPhone and iPad
WHO IS IT FOR?
• Carpenters, builders and contractors
• Homeowners renovating, building or setting up an altar
• Anyone interested in feng shui
Works fully offline. No account required.
Download now so every dimension in your home is in harmony!
Latest updates
1.7
本次更新修复了尺面显示的一处问题。
【修复】
• 相邻两格同为吉（或同为凶）时，两格之间的分隔线缺失，看起来像一个长格，例如“义”与“官”、“病”与“离”，以及尺子进入下一个周期的交界处（“本”与“财”）。现在每个大格的边界都有分隔线，与小格之间一致，通水尺、鲁班尺、丁兰尺、门光尺四把尺及三种语言均已修正。尺寸、所在格位与吉凶结果均不变。
【改进】
• 使用指南中的截图已重新拍摄，与当前尺面一致。
1.6
Meet Classic Luban, a fourth ruler for doors and gates. Choose which rulers appear and explore the rewritten User Guide.
NEW
• Classic Luban (46.08 cm): the Ming-Qing Luban ruler for the clear opening of doors and gates. Same sections, meanings, and Good/Bad markings as Yang Dwelling (42.9 cm), but a longer cycle, so a size can be Good on one and Bad on the other. Off by default; turn it on in Visible Rulers.
• Visible Rulers: show 1 to 4 rulers and drag the ≡ handle to reorder them. Your choice is saved. To open it, tap the sliders button next to “cm”, tap a ruler’s name in the left column, or use the side menu.
IMPROVED
• Rewritten User Guide: real screenshots in your language showing every button, a card per ruler with Good ranges and examples, and two illustrations comparing how to measure doors versus furniture and altars. Tap a picture to enlarge it.
• Redesigned side menu with LANGUAGE (VN / EN / CN) and HAPTICS at the bottom.
• Updated for iOS 27.
FIXED
• Typing a large size (e.g., 9000 mm) or tapping 0 to jump back to the start now lands the ruler exactly, and every ruler shows the correct result.
• Tapping “Luban Ruler” in the side menu while on the ruler screen no longer resets your measurement.
• Yang Dwelling (42.9 cm): the first sub-section of Separation is now named Long Confinement (formerly Chronic Illness), as in the Lu Ban Jing. It’s still Bad, so results are unchanged.
Store changes
What Lu Ban Ruler - Feng Shui changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Now free
Free (was 38.00 CNY)
New iPad screenshots
New screenshots
9 screenshots (was 9)
