Comparison

Ruler vs TRKRBox

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
Read full description

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

TRKRBox

Manage your car workshop efficiently by creating invoices, tracking customer and vehicle information, and streamlining approval workflows. This app is specifically designed to meet the needs of automotive repair businesses.

Highlights
  • Invoice creation
  • Customer management
  • Vehicle tracking via VIN scan
  • Approval workflow management
  • Workshop activity tracking
Features
Read full description

TRKRBox lets you manage and track all the activities in your car workshop. You can create invoices, manage your customers, add vehicles by simply scanning the VIN Number bar code, manage the approval workflow with your customers. It is designed thinking in your car workshop needs.

Screenshots

Ruler4 screens
TRKRBox4 screens

Verdict

The call

The clearest difference is rating: TRKRBox at 5.0 against Ruler's 3.7. TRKRBox also leads on in-app purchases (none vs 1) and ads (none vs shown). Ruler's advantage is update cadence (every 5 months vs every 14 months) and ratings volume (3 vs 1). 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 sells 1 one-off in-app purchase. TRKRBox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

TRKRBox holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

UpkeepUpdate frequency

Ruler ships an update every 5 months, TRKRBox every 14 months. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

Scorecard7 real differences · 3 level
Ruler versus TRKRBox: the parameters behind the verdict, then further details
ParameterRulerTRKRBox
PriceFreeFree
Rating3.7 (3 ratings)5.0 (1 ratings) — better
Positive reviews63.0% of reviews—
Number of ratings3 — better1
Update frequencyEvery 5 months — betterEvery 14 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size4 MB19 MB
Age rating4+4+
Developermitsunori oishiheyday dev

Customer experience

Ruler

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews27 reviews
Positive63.0%
Neutral3.7%
Negative33.3%

TRKRBox

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Ruler

One-time1
  • Hide Ads$0.99
None

TRKRBox

No in-app purchases

Questions

Is Ruler free?
Ruler is free to download, with in-app purchases available.
Is TRKRBox free?
TRKRBox is free to download, with no in-app purchases.
Which has better reviews, Ruler or TRKRBox?
TRKRBox is rated higher. Ruler averages 3.7 out of 5 from 3 ratings, while TRKRBox averages 5.0 from 1 ratings.
Do Ruler or TRKRBox have ads?
Ruler shows ads; TRKRBox does not.
Which is updated more often, Ruler or TRKRBox?
Ruler ships an update every 5 months, and TRKRBox every 14 months. Most recently, Ruler was updated on October 13, 2026 and TRKRBox on October 10, 2026.

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