Comparison

Millimeter Pro 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

Millimeter Pro

This app transforms your device into a versatile measuring tool. It allows for precise measurements of length, area, diameter, and angles using the touchscreen. Easily split objects into equal parts and switch between millimeters and inches for your convenience.

Highlights
  • Touchscreen ruler and tape measure
  • Measure length, area, diameter, and angles
  • Split objects into equal parts
  • Supports millimeters and inches
  • Estimate radius
  • Thread pitch gauge
Features
Read full description

App blog: https://goo.gl/da6LdZ Millimeter Pro is an easy-to-use and helpful measurement tool for iPhone or iPad. It uses a touch screen as a ruler or tape measure to make quick measurements, split objects into equal parts, measure object ratio (W/H), measure area, estimate diameter and angles, and split circular objects into equal parts. Place an object on the screen and simply touch and move rulers to measure it. You can measure in different units: MILLIMETERS or INCHES. Features: - mm and inch units - 2D measurements: vertical and horizontal rulers - area calculation - ratio calculation (W/H) - split linear and circular objects into equal parts - shows the length and angle of each part - disable/enable touch screen (freeze feature) - diameter or radius estimation - angle measure with Protractor / Goniometer mode - Thread pitch gauge for TPI and pitch size measurements Use this app in different areas to measure small objects that fit within your phone or tablet screen: jewelry, rings, stones, gem, beads, screws, bolts, buttons, nuts, knitting needles, knitting patterns, washers, insects, mosaic tile, hooks, frame wrap angle, etc. Enjoy the app and Thank you for your interest and support! VisTech.Projects Team

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
Read full description

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

Millimeter Pro4 screens
Calipers Tape Measure4 screens

Verdict

The call

Millimeter Pro and Calipers Tape Measure both sit at 4.4 stars, but that hides the real split: 78% of Calipers Tape Measure's written reviews are positive against 58% of Millimeter Pro's. Calipers Tape Measure also leads on price ($1.99 vs $3.99). Millimeter Pro's advantage is ratings volume (109 vs 26) and iOS requirement (15.0 vs 17.0). On rating, update cadence, ads and in-app purchases 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

Millimeter Pro costs $3.99 and Calipers Tape Measure $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Millimeter Pro against 4.3 for Calipers Tape Measure. Both are backed by a comparable volume of ratings — 109 and 26 respectively. Written reviews are what separate them: 58% of Millimeter Pro's written reviews are positive against 78% of Calipers Tape Measure's.

UpkeepUpdate frequency

Millimeter Pro ships an update every 4 months, Calipers Tape Measure every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Millimeter Pro versus Calipers Tape Measure: the parameters behind the verdict, then further details
ParameterMillimeter ProCalipers Tape Measure
Price$3.99$1.99 — better
Rating4.4 (109 ratings) — better4.3 (26 ratings)
Positive reviews57.9% of reviews77.8% of reviews — better
Number of ratings109 — better26
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size24 MB6 MB
Age rating4+4+
DeveloperVisTech.Projects LLCJacob Parker

Customer experience

Millimeter Pro

All ratings108 ratings
Positive85.2%
Neutral3.7%
Negative11.1%
Written reviews38 reviews
Positive57.9%
Neutral5.3%
Negative36.8%

Calipers Tape Measure

All ratings26 ratings
Positive80.8%
Neutral3.8%
Negative15.4%
Written reviews18 reviews
Positive77.8%
Neutral5.6%
Negative16.7%

In-app purchases

None

Millimeter Pro

No in-app purchases

None

Calipers Tape Measure

No in-app purchases

Questions

Is Millimeter Pro free?
Millimeter Pro costs $3.99, with no in-app purchases.
Is Calipers Tape Measure free?
Calipers Tape Measure costs $1.99, with no in-app purchases.
Which has better reviews, Millimeter Pro or Calipers Tape Measure?
Millimeter Pro is rated higher. Millimeter Pro averages 4.4 out of 5 from 109 ratings, while Calipers Tape Measure averages 4.3 from 26 ratings.
Do Millimeter Pro or Calipers Tape Measure have ads?
Neither Millimeter Pro nor Calipers Tape Measure shows ads.
Which is updated more often, Millimeter Pro or Calipers Tape Measure?
Millimeter Pro ships an update every 4 months, and Calipers Tape Measure every 3 months. Most recently, Millimeter Pro was updated on November 1, 2026 and Calipers Tape Measure on November 3, 2026.

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