Comparison

定規(Ruler)for iPad vs Ruler

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Measure anything

About

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.

Highlights

Digital ruler functionality
Millimeter measurement
Inch measurement
Supports all iPad sizes
Simple and cool interface

Read full description

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.

About

Ruler

Features

Read full description

Turn your smartphone screen into a precise ruler. Measure real lengths with a simple touch and drag. 【Key Features】 - Touch & drag to measure lengths instantly - Switch between cm and inch units - Real-time measurement display - Automatic PPI detection for accurate results 【Precision Calibration】 - Credit card (85.6mm) calibration for pinpoint accuracy - Saved calibration — set it once, measure anytime - Optimized accuracy per device 【Easy-to-Use Design】 - Clean ruler interface with clear markings - Dark mode support - 10 languages supported - Intuitive unit toggle 【Perfect For】 - Quick measurements when you don't have a ruler - DIY, crafts, and sewing projects - Furniture placement and space planning - Students and professionals on the go No need to carry a ruler — measure anything, anywhere with your phone!

Screenshots

Ruler3 screens

Verdict

The call

The clearest difference is ads: Ruler at none against 定規(Ruler)for iPad's shown. Ruler also leads on update cadence (every 2 months vs every 5 months) and device support (3 vs 1). On price, in-app purchases and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

定規(Ruler)for iPad ships an update every 5 months, Ruler every 2 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 5 level

定規(Ruler)for iPad versus Ruler: the parameters behind the verdict, then further details
Parameter	定規(Ruler)for iPad	Ruler
Price	Free	Free
Positive reviews	60.0% of reviews	—
Update frequency	Every 5 months	Every 2 months — better
Ads	Yes	No — better
In-app purchases	No	No
Monetization	Ad-supported	—
Devices	iPad	iPhone, iPad, iPod — better
Requires iOS	14.1	13.0 — better
Further details — not scored
Size	1 MB	23 MB
Age rating	4+	4+
Developer	Mayumi Kato	mintaek lee

In-app purchases

None

定規(Ruler)for iPad

No in-app purchases

None

Ruler

No in-app purchases

Questions

Is 定規(Ruler)for iPad free?

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

Is Ruler free?

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

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

定規(Ruler)for iPad shows ads; Ruler does not.

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

定規(Ruler)for iPad ships an update every 5 months, and Ruler every 2 months. Most recently, 定規(Ruler)for iPad was updated on October 23, 2026 and Ruler on October 25, 2026.