# Rul3r vs 定規(Ruler)for iPad

The clearest difference is in-app purchases: 定規(Ruler)for iPad at none against Rul3r's 1. 定規(Ruler)for iPad also leads on review sentiment (60% vs 45%) and iOS requirement (14.1 vs 16.0). Rul3r's advantage is update cadence (every 2 months vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Rul3r sells 1 one-off in-app purchase. 定規(Ruler)for iPad asks for nothing beyond the download.

Rul3r ships an update every 2 months, 定規(Ruler)for iPad every 5 months. The most recent releases landed on October 29, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Rul3r | 定規(Ruler)for iPad |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (1.1K ratings)](https://appshunter.io/ios/app/rul3r/id997746189/reviews)** | — |
| Number of ratings | **1.1K** | — |
| Positive reviews | 44.8% of reviews | **60.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 7 MB | 1 MB |
| Requires iOS | 16.0 | **14.1** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [YOYASOFT LLC](https://appshunter.io/developer/325345561) | [Mayumi Kato](https://appshunter.io/developer/705832872) |

## What reviewers say

### Rul3r

[App page](https://appshunter.io/ios/app/rul3r/id997746189)

This utility app provides a portable ruler for on-the-go measurements. It also includes a suite of additional tools like a protractor, spirit level, and various meters for diverse measurement needs.

**Highlights:** Portable ruler, Protractor, Spirit level, Altimeter, Decibel meter, Plumb line

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### 定規(Ruler)for iPad

[App page](https://appshunter.io/ios/app/rulerfor-ipad/id1148435850)

This free utility app functions as a precise digital ruler for iPads. It supports both millimeter and inch measurements, making it easy to measure any object directly on your device. Designed for simplicity and a cool user experience.

**Highlights:** Digital ruler functionality, Millimeter measurement, Inch measurement, Supports all iPad sizes, Simple and cool interface

**In-app purchases:** none


## Frequently asked questions

### Is Rul3r free?

Rul3r is free to download, with in-app purchases available.

### Is 定規(Ruler)for iPad free?

定規(Ruler)for iPad is free to download, with no in-app purchases.

### Do Rul3r or 定規(Ruler)for iPad have ads?

Both Rul3r and 定規(Ruler)for iPad show ads.

### Which is updated more often, Rul3r or 定規(Ruler)for iPad?

Rul3r ships an update every 2 months, and 定規(Ruler)for iPad every 5 months. Most recently, Rul3r was updated on October 29, 2026 and 定規(Ruler)for iPad on October 23, 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.*