Comparison

Ruler vs 오토베이스앱

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

Head to head
About

Ruler

This app displays various measurement scales for length, including meters and inches. It allows users to set magnification ratios and reduced scales for different applications. Users can calibrate the ruler and adjust PPI settings for accurate measurements.

Highlights
  • Display various measurement scales
  • Set magnification ratios
  • Set reduced scales
  • Measure in meters and inches
  • Free mode for custom scales
  • Calibration for accuracy
  • PPI setting
Features
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Scale Ruler is the simple application to display the scale of various measurement units. ※ Warning: - The accuracy of the scales cannot be guaranteed. - Calibration and PPI values ​​will be reset when the model changes. - Set the PPI value only when the model is undecided. - When you change the PPI value, perform calibration after the change. ■How to use: ■Select mode In UNLOCKED state, after choosing measurement unit, magnification ratio and reduced scale, the scale is displayed. ■Free mode When dragging the screen at UNLOCK, you can set the scale in the range 1: 1 to 1: 100. When you press and hold the scale value, the keyboard is displayed and you can enter the scale. You can lock the scale on the ruler with a switch. Sorry for the advertisement during unlocking. After In-App Purchase, your ads will no longer be displayed. Specification of Scale Ruler - measure length meter,inches - magnification ratio 50% , 70.7% , 100% , 141% , 200% - reduced scale  for meter    1:100 , 1:150 , 1:200 , 1:250 , 1:300 , 1:400 , 1:500 , 1:600  for inch   1:1 , 1:1.5 , 1:2 , 1:2.5 , 1:3 , 1:4 , 1:5 , 1:6  for inch(Architectural)   1:1 , 1:2 , 1:4 , 1:8 , 1:12 , 1:16 , 1:24 , 1:32 , 1:48 , 1:64   1:96 , 1:128 , 1:192 , 1:384  for inch(Engineering) 1:120 , 1:240 , 1:360 , 1:480 , 1:600 , 1:720 1:800 , 1:960 , 1:1080 ■ Settings - Calibration - PPI (pixels per inch) setting - In-app purchase (ads not displayed) - In-app purchase restoration ■ Calibration Adjust the length of the ruler. Use the correct ruler for adjustment. "Calibration" button: Records the adjusted state and reflects the calibration result on the ruler. "Reset" button: Returns the adjustment status to the specified value. It will not be recorded. "Initialize" button: Returns the adjustment status to the specified value and reflects it on the ruler. * Caution: The calibration value will be reset when the model changes. ■ PPI (pixels per inch) setting If the model is undecided, check the PPI value of the model before setting the PPI value. * Please set only when the model is undecided. "OK" button: Record the entered PPI value and reflect it on the ruler display. "Initialize" button: Returns the PPI value to the specified value and reflects it on the ruler. * Caution: The PPI value will be reset when the model changes.

About

오토베이스앱

Features
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Autobase APP is an Autobase SCADA mobile monitoring and control program. When using the Autobase SCADA Web version, tag monitoring and control can be performed through the tag list, and HMI monitoring and control can be performed through the mobile drawing screen.

Screenshots

Ruler4 screens
오토베이스앱3 screens

Verdict

The call

The clearest difference is in-app purchases: 오토베이스앱 at none against Ruler's 1. 오토베이스앱 also leads on ads (none vs shown) and update cadence (daily vs every 5 months). On price, device support 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. Ruler sells 1 one-off in-app purchase. 오토베이스앱 asks for nothing beyond the download.

UpkeepUpdate frequency

Ruler ships an update every 5 months, 오토베이스앱 daily. The most recent releases landed on October 21, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Ruler versus 오토베이스앱: the parameters behind the verdict, then further details
ParameterRuler오토베이스앱
PriceFreeFree
Rating3.7 (3 ratings) — better—
Positive reviews63.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 5 monthsDaily — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size4 MB63 MB
Age rating4+17+
Developermitsunori oishiAutoBase, Inc. (KR)

In-app purchases

1 purchases

Ruler

One-time1
  • Hide Ads$0.99
None

오토베이스앱

No in-app purchases

Questions

Is Ruler free?
Ruler is free to download, with in-app purchases available.
Is 오토베이스앱 free?
오토베이스앱 is free to download, with no in-app purchases.
Do Ruler or 오토베이스앱 have ads?
Ruler shows ads; 오토베이스앱 does not.
Which is updated more often, Ruler or 오토베이스앱?
Ruler ships an update every 5 months, and 오토베이스앱 daily. Most recently, Ruler was updated on October 21, 2026 and 오토베이스앱 on October 28, 2026.

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