Comparison

Ruler Professional vs Ruler+ Utility

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

Head to head
About

Ruler Professional

Transform your iOS device into a versatile measuring tool. Accurately measure lengths in both centimeters and inches using on-screen markers. Ideal for quick, on-the-go measurements.

Highlights
  • Device as a ruler
  • Metric and imperial units
  • Adjustable measurement markers
  • Real-time distance display
Features
Read full description

Turn your iPod Touch, iPhone or iPad into a ruler! You want to measure in centimeters? or inches? We support both the metric and English systems. You want to measure the length of an object? You can move the two red lines in the app and the distance between the two lines will be displayed to you immediately!

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!

Screenshots

Ruler Professional3 screens
Ruler+ Utility4 screens

Verdict

The call

The clearest difference is ads: Ruler Professional at none against Ruler+ Utility's shown. Ruler Professional also leads on update cadence (every 6 months vs every 40 months) and monetization model (free vs free with in-app purchases). On price, ratings volume, in-app purchases 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 Professional sells 1 one-off in-app purchase and Ruler+ Utility sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Ruler Professional holds the better App Store score, 3.3 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 57% of Ruler Professional's written reviews are positive against 47% of Ruler+ Utility's.

UpkeepUpdate frequency

Ruler Professional ships an update every 6 months, Ruler+ Utility every 40 months. The most recent releases landed on June 2, 2026 and September 3, 2026 respectively.

Scorecard6 real differences · 4 level
Ruler Professional versus Ruler+ Utility: the parameters behind the verdict, then further details
ParameterRuler ProfessionalRuler+ Utility
PriceFreeFree
Rating3.3 (3 ratings) — better3.0 (2 ratings)
Positive reviews57.1% of reviews — better46.7% of reviews
Number of ratings3 — better2
Update frequencyEvery 6 months — betterEvery 40 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better13.0
Further details — not scored
Size7 MB24 MB
Age rating4+4+
DeveloperKBIC International LtdKyungjin Lee

Customer experience

Ruler Professional

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews14 reviews
Positive57.1%
Neutral0.0%
Negative42.9%

Ruler+ Utility

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews30 reviews
Positive46.7%
Neutral3.3%
Negative50.0%

In-app purchases

1 purchases

Ruler Professional

One-time1
  • Ad Removal$0.99
1 purchases

Ruler+ Utility

One-time1
  • Remove Ads$1.99

Questions

Is Ruler Professional free?
Ruler Professional is free to download, with in-app purchases available.
Is Ruler+ Utility free?
Ruler+ Utility is free to download, with in-app purchases available.
Which has better reviews, Ruler Professional or Ruler+ Utility?
Ruler Professional is rated higher. Ruler Professional averages 3.3 out of 5 from 3 ratings, while Ruler+ Utility averages 3.0 from 2 ratings.
Do Ruler Professional or Ruler+ Utility have ads?
Ruler+ Utility shows ads; Ruler Professional does not.
Which is updated more often, Ruler Professional or Ruler+ Utility?
Ruler Professional ships an update every 6 months, and Ruler+ Utility every 40 months. Most recently, Ruler Professional was updated on June 2, 2026 and Ruler+ Utility on September 3, 2026.

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