Comparison

Super Ruler vs Calipers Tape Measure

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

Head to head
About

Super Ruler

Features
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Now you can Measure everything with beautiful on-screen ruler. A simple, user-friendly and accurate ruler for your phone -Caliper mode - Pick your units: mm, cm, inches, m, inch, foot, and yards - Control ruler length as you want, even you can put 100 meter if you want - no calibration needed - Copy current length to clipboard and paste it in another app - Save your current measurement screen as image - Very simple so everyone can use it

About

Calipers Tape Measure

Measure objects of any size with your phone. Features a 5-meter tape measure for larger items and a precision caliper mode for measuring small objects down to a tenth of a millimeter. Offers highly accurate readings tested across various devices and settings.

Highlights
  • 5-meter tape measure
  • Precision caliper mode
  • Measure to 0.1mm accuracy
  • Spirit level functionality
  • Accurate measurement testing
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Calipers lets you take measurements when you're on the go. For the big things, there's 5 meter tape measure. Simply place your iPhone on a surface so the ‘zero’ aligns with where you want to start your measurement. Next, place a finger near the bottom of your iPhone and slide your iPhone along the surface, keeping your finger still. Finally, when your finger reaches the top, repeat the process again until you’ve completed your measurement For the little things, the calipers mode will let you measure objects within a tenth of a millimeter. Simply place an object on the screen, and drag the top and bottom guides until they are just visible. To get really accurate readings, you can use the ‘plus’ and ‘minus’ buttons to move the guides closer or further apart by a 1/10th of a millimeter. 6 out of the top 10 free apps in this category are off by as much as 10% on the iPhone 12 & 13 Mini, or when some accessibility features are enabled. Since most people don't check their app against a ruler - we felt it was really important we did! This app has been throughly tested to ensure the measurements are accurate in every scenario.

Screenshots

Super Ruler4 screens
Calipers Tape Measure4 screens

Verdict

The call

The clearest difference is price: Super Ruler at Free against Calipers Tape Measure's $1.99. Super Ruler also leads on iOS requirement (11.0 vs 17.0). Calipers Tape Measure's advantage is ads (none vs shown) and update cadence (every 3 months vs every 109 months). On 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

Super Ruler is free to download; Calipers Tape Measure costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Super Ruler ships an update every 109 months, Calipers Tape Measure every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Super Ruler versus Calipers Tape Measure: the parameters behind the verdict, then further details
ParameterSuper RulerCalipers Tape Measure
PriceFree — better$1.99
Rating—4.3 (26 ratings) — better
Positive reviews—77.8% of reviews
Number of ratings—26 — better
Update frequencyEvery 109 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better17.0
Further details — not scored
Size8 MB6 MB
Age rating4+4+
DeveloperHany ElmehyJacob Parker

In-app purchases

None

Super Ruler

No in-app purchases

None

Calipers Tape Measure

No in-app purchases

Questions

Is Super Ruler free?
Super Ruler is free to download, with no in-app purchases.
Is Calipers Tape Measure free?
Calipers Tape Measure costs $1.99, with no in-app purchases.
Do Super Ruler or Calipers Tape Measure have ads?
Super Ruler shows ads; Calipers Tape Measure does not.
Which is updated more often, Super Ruler or Calipers Tape Measure?
Super Ruler ships an update every 109 months, and Calipers Tape Measure every 3 months. Most recently, Super Ruler was updated on November 2, 2026 and Calipers Tape Measure on November 3, 2026.

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