# Ruler Professional vs 臺北市預約公車

The clearest difference is review sentiment: Ruler Professional at 57% against 臺北市預約公車's 6%. Ruler Professional also leads on iOS requirement (10.0 vs 12.0). 臺北市預約公車's advantage is in-app purchases (none vs 1) and update cadence (every 6 weeks vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Ruler Professional sells 1 one-off in-app purchase. 臺北市預約公車 asks for nothing beyond the download.

Ruler Professional ships an update every 6 months, 臺北市預約公車 every 6 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Ruler Professional | 臺北市預約公車 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/ruler-professional/id527471088/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **57.1% of reviews** | 6.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 7 MB | 51 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KBIC International Ltd](https://appshunter.io/developer/505094094) | [MURAKAMI Digital Design Ltd.](https://appshunter.io/developer/1723447107) |

## What reviewers say

### Ruler Professional

[App page](https://appshunter.io/ios/app/ruler-professional/id527471088)

Transform your iOS device into a versatile measuring tool. Accurately measure lengths in both centimeters and inches using on-screen markers. Ideal for quick, on-the-go measurements.

**Highlights:** Device as a ruler, Metric and imperial units, Adjustable measurement markers, Real-time distance display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Removal | $0.99 | one-time |


### 臺北市預約公車

[App page](https://appshunter.io/ios/app/id1494075669)

**In-app purchases:** none


## Frequently asked questions

### Is Ruler Professional free?

Ruler Professional is free to download, with in-app purchases available.

### Is 臺北市預約公車 free?

臺北市預約公車 is free to download, with no in-app purchases.

### Do Ruler Professional or 臺北市預約公車 have ads?

Neither Ruler Professional nor 臺北市預約公車 shows ads.

### Which is updated more often, Ruler Professional or 臺北市預約公車?

Ruler Professional ships an update every 6 months, and 臺北市預約公車 every 6 weeks. Most recently, Ruler Professional was updated on November 1, 2026 and 臺北市預約公車 on November 3, 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.*