Rul3r vs 定規(Ruler)for iPad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rul3r
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.
- Portable ruler
- Protractor
- Spirit level
- Altimeter
- Decibel meter
- Plumb line
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Did you ever want to measure the length of something but you had no ruler at hand? Rul3r was created exactly for situations like this, so that a portable ruler is always available to you on your phone, whenever you need it. What's more, Rul3r provides a lot more tools: * Protractor * Plumb Line * Spirit Level * Elevation, Air Pressure and Location meter * Decibel Meter * Ordinal Date Converter
定規(Ruler)for iPad
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.
- Digital ruler functionality
- Millimeter measurement
- Inch measurement
- Supports all iPad sizes
- Simple and cool interface
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無料の定規アプリです。mmとinch表示で全てのサイズのiPadで正確に測れます。カッコよくて、簡単です。 A free ruler application. You can measure correctly in iPad with the size of everything by mm and inch indication. It's cool and easy.
Screenshots
Verdict
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.
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. 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.
| Parameter | Rul3r | 定規(Ruler)for iPad |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (1.1K ratings) — better | — |
| Positive reviews | 44.8% of reviews | 60.0% of reviews — better |
| Number of ratings | 1.1K — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad — better | iPad |
| Requires iOS | 16.0 | 14.1 — better |
| Further details — not scored | ||
| Size | 7 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | YOYASOFT LLC | Mayumi Kato |
Customer experience
Rul3r
定規(Ruler)for iPad
In-app purchases
Rul3r
- Remove Ads$2.99
定規(Ruler)for iPad
No in-app purchases
