Lu Ban Ruler vs Note Level
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lu Ban Ruler
This professional tool applies ancient principles to measure furniture, houses, and graves for auspicious placement. It offers high accuracy and works offline, supporting multiple units for precise application.
- Door Ruler for furniture
- Yang House Ruler for buildings
- Yin House Ruler for graves
- High accuracy
- Offline functionality
- Multiple unit support (cm, mm, meters)
- Detailed usage guide
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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!
Note Level
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Công cụ đo Thủy Chuẩn Cao Độ Tiếng Việt Tác giả Quý Phạm Phát triển bởi PL Minh Phú
Screenshots
Verdict
The clearest difference is in-app purchases: Lu Ban Ruler at none against Note Level's 1. Note Level's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Note Level sells 1 one-off in-app purchase. Lu Ban Ruler asks for nothing beyond the download.
Lu Ban Ruler ships an update every 3 months, Note Level every 2 months. The most recent releases landed on November 7, 2026 and October 14, 2026 respectively.
| Parameter | Lu Ban Ruler | Note Level |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (12 ratings) — better | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Manh Nguyen | Pham Le Minh Phu |
In-app purchases
Lu Ban Ruler
No in-app purchases
Note Level
- Excel chuyên nghiệp$0.99
