# Lu Ban Ruler vs Note Level

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.

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.

## The numbers

| Metric | Lu Ban Ruler | Note Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (12 ratings)](https://appshunter.io/ios/app/lu-ban-ruler-feng-shui/id6443977526/reviews)** | — |
| Number of ratings | **12** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 2 MB | 24 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Manh Nguyen](https://appshunter.io/developer/1445497751) | [Pham Le Minh Phu](https://appshunter.io/developer/1826083491) |

## What reviewers say

### Lu Ban Ruler

[App page](https://appshunter.io/ios/app/lu-ban-ruler-feng-shui/id6443977526)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Note Level

[App page](https://appshunter.io/ios/app/note-level/id6749153649)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Excel chuyên nghiệp | $0.99 | one-time |


## Frequently asked questions

### Is Lu Ban Ruler free?

Lu Ban Ruler is free to download, with no in-app purchases.

### Is Note Level free?

Note Level is free to download, with in-app purchases available.

### Do Lu Ban Ruler or Note Level have ads?

Neither Lu Ban Ruler nor Note Level shows ads.

### Which is updated more often, Lu Ban Ruler or Note Level?

Lu Ban Ruler ships an update every 3 months, and Note Level every 2 months. Most recently, Lu Ban Ruler was updated on November 7, 2026 and Note Level 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.*