定規(Ruler) vs Life
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
定規(Ruler)
A straightforward measuring tool for iPhones, offering accurate measurements in both millimeters and inches. It's designed for ease of use and provides a cool, functional experience for everyday measuring needs.
- Accurate measurements
- Millimeter display
- Inch display
- Supports all iPhone sizes
- Simple interface
Read full descriptionHide full description
シンプルな定規、mmとinch表示で全てのサイズのiPhoneで正確に測れます。カッコいいでしょ You can measure correctly in iPhone with the size of everything by simple ruler, mm and inch indication. It would be cool
Life
Transform your smartphone into a precise measuring tool. This utility app allows you to measure lengths and distances directly on your screen. It's a convenient digital ruler for everyday tasks.
- Smartphone as a ruler
- Measure lengths
- Digital measuring tool
- Precise measurements
Read full descriptionHide full description
This app turns your smartphone into a ruler.
Screenshots
Verdict
The clearest difference is rating: 定規(Ruler) at 5.0 against Life's 3.3. 定規(Ruler) also leads on iOS requirement (15.6 vs 18.0). Life's advantage is update cadence (every 3 weeks vs every 6 months) and review sentiment (100% vs 80%). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
定規(Ruler) holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews complicate that: 80% of 定規(Ruler)'s written reviews are positive against 100% of Life's, so the app with the better star average is not the one people write more warmly about.
定規(Ruler) ships an update every 6 months, Life every 3 weeks. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.
| Parameter | 定規(Ruler) | Life |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 3.3 (7 ratings) |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 7 — better |
| Update frequency | Every 6 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Mayumi Kato | Jumpei Adachi |
Customer experience
定規(Ruler)
Life
In-app purchases
定規(Ruler)
No in-app purchases
Life
No in-app purchases
