AppCorpus
Market US

Unit Converter - Pro Units App

by Tue Nguyen Minh

iPhone · iPad

Active Last checked 5 Sep 2026

Quick verdict

What it is
Store information collected; independent summary not yet available.
At a glance
  • Free to download
  • In-app purchases

Categories and search queries

Official categories

AppCorpus categories

Key functions

Function Availability Access Scope Evidence
Free app Yes Free Store published
In-app purchases Yes Limited free Store published

Screens

App Store

9 store screenshots

Unit Converter - Pro Units App ipad screenshot 1
Unit Converter - Pro Units App ipad screenshot 2
Unit Converter - Pro Units App ipad screenshot 3
Unit Converter - Pro Units App ipad screenshot 4

Pricing & paywalls

App Store

  • Pro Features — $2.99

Ratings & reviews

App Store

4.6 16118 ratings · App Store

  1. 2/5No Support

    I paid the $2.99 to unlock the Pro version on my iPhone. Then I downloaded the app to my iPad, and the app was wanting me to pay another $2.99 to unlock the Pro version. I tried contacting the developer support but without success. First, I was redirected to an unsecured website. Since I use a strong VPN, I took a risk and connected to the website. Then the button to contact support caused the website to freeze. The Pro version seems to work ok on my iPhone.

    Rjbt1983 · 5 Sep 2026

  2. 1/5What a joke!

    Don’t bother with a download. You don’t get 16 categories, you get 4 (the top 4 you see in their screenshot. The rest have that dreaded “lock” symbol on them). To get the rest, you have to upgrade to their sparkly awesome version and pay. I was looking for a length converter and they want me to pay for that. That isn’t even a free one?! HAHAHA! I was just looking for a replacement for my old reliable converter that’s been crashing and this most definitely is not it. I’ll just google my conversions instead of paying this thief of a company to tell me that 70mm is 2 3/4inches.

    PricklyPoo811 · 5 Sep 2026

  3. 5/5Awesome app

    Just downloaded it and it’s seems great so if no bugs or hiccups then I’m really happy. It’s free so I got it mainly for Centimeters to inches. But it seems to have a lot more options. I haven’t tried the other available opinions yet. But cm to inches seems to be perfect. Help when buying stuff online that uses cm not inches. For a free app give it a try.

    Capone1973 · 5 Sep 2026

  4. 5/5Thumbs up

    App is good, I works well, at least for me and what I’m using it for. I do wish I could customize the category screen to organizer it to fit my need, I only use the categories “cooking, temperature, volume and weight” I wish I could remove the other categories to leave only the categories I use, other than that app is great

    Tireshop D · 5 Sep 2026

  5. 1/5Concerning and It Gets Worse!

    Update - After writing the review below, and before deleting the app[s], I looked for the app’s settings. To my surprise, neither Unit Calculator Pro nor Unit Calculator + (yes they are two different paid apps rather than upgrades of the base version) could be found within my phone’s settings menu. The app was nowhere to be found! Everything about this app screams spyware or worse. I voiced my concerns, like many others have, to Apple, but I could not request a refund because the app I paid for twice does not show as refundable for some reason. I don’t know how Apple can claim that they thoroughly vet every app in their store when a surreptitious and deceptive app like this lives on the platform. I want an explanation and my money back, but I’m not holding my breath. Original Review - The app seems ok, but the lack of a help section is an issue. More concerning is that the “app support” link brings you to a “page not found” error. After paying to upgrade to +, I am feeling like I made a foolish purchase. I bought the app because the developer claims that data isn’t collected, but the lack of a user manual coupled with a missing dev website makes me highly suspicious. Anyone charging for their app should provide instructions, and a functional website should be mandatory. I am considering removing the app and contacting Apple.

    JWDX5 · 5 Sep 2026

Privacy & accessibility

App Store

Privacy

  • Data Not Collected Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

  • 1.8.5

    Minor bug fixes

  • 1.8.6

    Minor bug fixes

  • 1.8.7

    Minor bug fixes

  • 1.8.8

    Minor bug fixes

  • 1.8.9

    Minor bug fixes

  • 1.9.1

    Minor bug fixes

  • 1.9.2

    Minor bug fixes

  • 1.9.3

    Minor bug fixes

  • 1.9.4

    Minor bug fixes

  • 1.9.5

    Minor bug fixes

  • 1.9.6

    Minor bug fixes

  • 1.9.7

    Minor bug fixes

  • 1.9.8

    Minor bug fixes

  • 1.9.9

    Minor bug fixes

  • 2.0.1

    Minor bug fixes

  • 2.0.2

    Minor bug fixes

  • 2.0.3

    Minor bug fixes

  • 2.0.4

    Minor bug fixes

  • 2.0.5

    Minor bug fixes

  • 2.0.6

    Minor bug fixes

  • 2.0.7

    Minor bug fixes

  • 2.0.8

    Minor bug fixes

  • 2.0.9

    Minor bug fixes

  • 2.1.1

    Minor bug fixes

  • 2.1.2 · 12 Mar 2026

    Minor bug fixes

Alternatives

Availability by market

Data quality & evidence

Page completeness
Live store listing
Last verified
5 Sep 2026
Sources
App Store

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