Proximity - Access Card Calc

Most Recent Highest Rated Lowest Rated

📊 Productivity

$1.99

Details

Released
Updated
Version
Compatibility
Age Rating
Monetization
Size
Devices
Data updated
Languages

December 11, 2013
March 17, 2026
1.5.2
iOS 12.0+
4+
paid
638KB
iPhone, iPod
a month ago
American English

Features

macOS Compatibility

Developer

Farren Domenici

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Proximity - Access Card Calc screenshot #4 for iPhone

⭐4

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🔄6+ apps

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❓8 answered

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About

This utility helps determine the correct number and facility code for access cards or fobs. It converts binary or hexadecimal card values into usable data, and can also reverse the process by generating binary values from facility codes and card numbers.

✓Binary to number conversion

✓Hexadecimal to number conversion

✓Number to binary generation

✓Supports multiple bit lengths

✓Supports numerous card formats

✓Reverse calculation functionality

Show original description

What's New in Proximity

1.5.2

March 17, 2026

-Under the hood repairs

User reviews

App doesn’t work

34bit HID Standard does not calculate correctly when using reverse lookup

If hexadecimal value input is entered the correct facility code and card number is displayed.

CG100110011

6 years ago

Response from developer

I'm sorry that you're having issues. Firstly, any support should be addressed to me via email and not as a 1 star review stating the app doesn't work. If there are any issues I would greatly appreciate the heads up so that I can address and repair as needed. Secondly, I took a look into the issue but could not find any errors. Keep in mind the reverse lookup does not take into account for parity bits. Please send me an email at phil@locksmithapps.com with details/screenshots so that I can look into this further. Thank you.

Extremely Handy App to have!

This is a great tool! handy to have and covers many card formats.

DreaDmii

9 years ago

Response from developer

Thanks! Glad you like!

Doesn't work at all

I have several card types that I have used on an existing card access system, and know the raw hexadecimal code of my card and its translation to facility code and card number. This app doesn't even get it close and I wasted 99 cents on it. Used it to try and find the fac. code and card number of an unknown card and guess the bit structure, but it's translations are garbage.

J D Mundy

10 years ago

Response from developer

Sorry you are having issues! I would love to help but I need to know the following: Which formats are not working for you? Would you be able to provide examples? Also, which device and iOS version are you using?

Rubbish

This is junk

Shags182

10 years ago

Response from developer

I'm sorry to hear! Could you elaborate?

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