Comparison

Ruler+ Utility vs 3Denkou

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

Head to head
About

Ruler+ Utility

Transform your smartphone into a versatile measuring tool. Instantly measure the length of objects using your phone's screen, with options for fixed or scroll modes. Save your measurements and choose between centimeters or inches for precise results.

Highlights
  • Smartphone ruler
  • Fixed and scroll measurement modes
  • Save measurements
  • Centimeter and inch support
  • Fine-tune scale
  • Intuitive interface
Features
Read full description

This app transforms your smartphone into a handy ruler. Whenever you’re curious about the length of something, you can measure it instantly with just your smartphone! From a pencil on your desk to the thickness of a book, 'Ruler' is perfect for quickly checking lengths. Without any complex explanations or difficult features, just open the app and measure according to the scale. Its intuitive interface allows anyone to measure quickly and accurately. Measurement methods: 1) Fixed Ruler: Place the object you want to measure on your smartphone, touch the screen with your finger, and move it to the end of the object to measure its length. 2) Scroll Ruler: Use this method to measure objects longer than your smartphone. Place your smartphone next to the object, hold it with your thumb and middle finger, touch the screen with your index finger, and move the phone gradually to measure the length. Main Features: - Easily save the measurements you take - Measure in both centimeters (cm) and inches (inch) - Fine-tune the scale for more precise measurements - Choose between fixed and scroll modes depending on your needs Never worry about not having a ruler again. With 'Ruler', you can measure anything conveniently at any time. Experience smart measurement now!

About

3Denkou

Features
Read full description

3Denkou is a work management app for employees and teams. It brings daily work records, attendance, Nipo reports, notices, groups, and company vehicles together in one place. Main features: • Record day and night shift start and end times • Track work sites, transportation, overtime, and night allowances • Review monthly records and export Excel or PDF files • Create teams and confirm member attendance • Send notices to everyone, groups, or selected employees • Reserve, check out, and return company vehicles • Record mileage, refueling, maintenance, and vehicle notes • Manage users, access levels, teams, and vehicles 3Denkou helps teams reduce missed entries and keep monthly work information organized.

Screenshots

Ruler+ Utility4 screens
3Denkou3 screens

Verdict

The call

The clearest difference is in-app purchases: 3Denkou at none against Ruler+ Utility's 1. 3Denkou also leads on ads (none vs shown) and update cadence (every 4 days vs every 40 months). Ruler+ Utility's advantage is iOS requirement (13.0 vs 15.0). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ruler+ Utility sells 1 one-off in-app purchase. 3Denkou asks for nothing beyond the download.

UpkeepUpdate frequency

Ruler+ Utility ships an update every 40 months, 3Denkou every 4 days. The most recent releases landed on November 1, 2026 and November 12, 2026 respectively.

Scorecard4 real differences · 6 level
Ruler+ Utility versus 3Denkou: the parameters behind the verdict, then further details
ParameterRuler+ Utility3Denkou
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews46.7% of reviews—
Number of ratings2 — better—
Update frequencyEvery 40 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size24 MB56 MB
Age rating4+4+
DeveloperKyungjin LeeKennedy Murakami

In-app purchases

1 purchases

Ruler+ Utility

One-time1
  • Remove Ads$1.99
None

3Denkou

No in-app purchases

Questions

Is Ruler+ Utility free?
Ruler+ Utility is free to download, with in-app purchases available.
Is 3Denkou free?
3Denkou is free to download, with no in-app purchases.
Do Ruler+ Utility or 3Denkou have ads?
Ruler+ Utility shows ads; 3Denkou does not.
Which is updated more often, Ruler+ Utility or 3Denkou?
Ruler+ Utility ships an update every 40 months, and 3Denkou every 4 days. Most recently, Ruler+ Utility was updated on November 1, 2026 and 3Denkou on November 12, 2026.

Other comparisons