Comparison

Millimeter Pro vs Unit Plus Converter

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

Unit Plus Converter

Easily convert between numerous units and metrics with this intuitive application. It offers over 100 common conversion units across various categories, presented in a simple and elegant interface.

Highlights
  • Over 100 conversion units
  • Multiple categories
  • Area conversion
  • Data conversion
  • Length conversion
  • Temperature conversion
  • Weight-mass conversion
Features
Read full description

Unit Converter is a useful app that lets you easily convert from various units into lots of others. It includes over 100 common conversion units across multiple categories. Its simple and beautifully designed unit converter which make it altogether different from others. It has the following unit conversions: *Area *Data (bit, byte, kilobyte, megabyte, etc.) *Fuel-milage *Length *Power *Pressure *Speed *Temperature *Time (days, weeks, hours, etc.) *Volume (dry and wet) *Weight-mass We want to make this app as your daily goto item. Please send as much feedback and suggestions to help us improve and keep us motivated. You can send from within the app or email us gosalapps@gmail.com.

Screenshots

Millimeter Pro4 screens
Unit Plus Converter4 screens

Verdict

The call

The clearest difference is price: Unit Plus Converter at Free against Millimeter Pro's $3.99. Unit Plus Converter also leads on review sentiment (100% vs 58%) and rating (4.7 vs 4.4). On update cadence, ads, in-app purchases and monetization model 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

Unit Plus Converter is free to download; Millimeter Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Unit Plus Converter holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Unit Plus Converter has 564 ratings behind it against 108, so its average is the more settled of the two. Written reviews point the same way: 58% of Millimeter Pro's written reviews are positive against 100% of Unit Plus Converter's.

UpkeepUpdate frequency

Millimeter Pro ships an update every 4 months, Unit Plus Converter every 5 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

Scorecard5 real differences · 5 level
Millimeter Pro versus Unit Plus Converter: the parameters behind the verdict, then further details
ParameterMillimeter ProUnit Plus Converter
Price$3.99Free — better
Rating4.4 (108 ratings)4.7 (564 ratings) — better
Positive reviews57.9% of reviews100.0% of reviews — better
Number of ratings108564 — better
Update frequencyEvery 4 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size24 MB13 MB
Age rating4+4+
DeveloperVisTech.Projects LLCHarjot Singh

Customer experience

Millimeter Pro

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

Unit Plus Converter

All ratings564 ratings
Positive94.0%
Neutral3.9%
Negative2.1%
Written reviews13 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Millimeter Pro

Not enough reviews yet to summarise bugs or requests.

Unit Plus Converter

Requested features

2 requests
  • Kilogram to stones/pounds conversion
  • Fractions of an inch down to 1/32” as a choice for conversion to mm

In-app purchases

None

Millimeter Pro

No in-app purchases

None

Unit Plus Converter

No in-app purchases

Questions

Is Millimeter Pro free?
Millimeter Pro costs $3.99, with no in-app purchases.
Is Unit Plus Converter free?
Unit Plus Converter is free to download, with no in-app purchases.
Which has better reviews, Millimeter Pro or Unit Plus Converter?
Unit Plus Converter is rated higher. Millimeter Pro averages 4.4 out of 5 from 108 ratings, while Unit Plus Converter averages 4.7 from 564 ratings.
Do Millimeter Pro or Unit Plus Converter have ads?
Neither Millimeter Pro nor Unit Plus Converter shows ads.
Which is updated more often, Millimeter Pro or Unit Plus Converter?
Millimeter Pro ships an update every 4 months, and Unit Plus Converter every 5 months. Most recently, Millimeter Pro was updated on October 16, 2026 and Unit Plus Converter on October 14, 2026.

Other comparisons