定規(Ruler)for iPad vs Interval Voice Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Interval Voice Clock
This app announces the current time at customizable intervals, allowing for hands-free time checks. It offers adjustable volume, voice options, and background playback, functioning entirely offline.
- Customizable announcement intervals
- Adjustable announcement volume
- Choice of male or female voice
- Background playback support
- Offline functionality
- Multiple announcement types
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Signal Time is a simple and easy-to-read app that announces the time at regular intervals. By default, it announces the time every 10 seconds (customizable). Use it in various situations—have it read the time aloud while you're busy getting ready in the morning, or check the time hands-free in the kitchen while waiting for your favorite show to start. No internet connection is required; the app works entirely offline. * Adjust the volume of both the second-hand sound and voice announcements (can be muted) * Set the announcement interval (from every 10 seconds to every hour) * Choose the type of voice used for announcements (female or male) * Supports background playback * Choose the type of announcements (Standard, Simple and Minimal)
Screenshots
Verdict
The clearest difference is price: 定規(Ruler)for iPad at Free against Interval Voice Clock's $1.99. Interval Voice Clock's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 5 months). On review sentiment, 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
定規(Ruler)for iPad is free to download; Interval Voice Clock costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
定規(Ruler)for iPad ships an update every 5 months, Interval Voice Clock every 2 weeks. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.
| Parameter | 定規(Ruler)for iPad | Interval Voice Clock |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 60.0% of reviews | 66.7% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 14.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Mayumi Kato | Ryo Okamoto |
Customer experience
定規(Ruler)for iPad
Interval Voice Clock
In-app purchases
定規(Ruler)for iPad
No in-app purchases
Interval Voice Clock
No in-app purchases
Questions
Is 定規(Ruler)for iPad free?
Is Interval Voice Clock free?
Do 定規(Ruler)for iPad or Interval Voice Clock have ads?
Which is updated more often, 定規(Ruler)for iPad or Interval Voice Clock?
Other comparisons
