$0.99

Details

  • Released
  • Updated
CRC Calculator screenshot #1 for iPhone
CRC Calculator screenshot #2 for iPhone
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CRC Calculator screenshot #4 for iPhone
iphone
ipad
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About

This utility generates cyclic redundancy check (CRC) bytes from input data using polynomial division. It supports 8, 16, 32, and 64-bit check bytes and allows data input via manual entry or file upload. Users can choose between normal or reversed CRC formats.

Generates 8, 16, 32, & 64-bit CRC bytes
Input data via manual entry (hex)
Source data from uploaded files
Supports normal and reversed CRC formats
Integrated document explorer
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What's New in CRC Calculator

3.1

April 13, 2026

1) Rewrite application to use Auto Layout to give more optimised UI layout for specific device constraints 2) Rewrite custom hex keyboard to now include system like delete and backspace button functionality 3) Fixed possible bug when reflecting the output result 4) Changed iOS minimum deployment target from 14.0 to 17.6

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User reviews

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Better than any online calculator

This package was great for checking the checksums while I was debugging some USB transactions. It was good to have a native calculator that doesn't rely on an Internet connection. Great to have all CRC byte lengths in the same package.

Fantastic app!

This tool was great for generating the CRC checksum on my serial network packets. I simply copied and pasted in the whole network packet and put in the CRC poly and the tool cracked the checksum out with ease. The reversed (LSB) is a great feature as i haven’t come across another calculator tool that can handle this notation yet.
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Great tool for embedded systems development

This utility came in handy for verifying that my code was storing the correct CRC checksum in an EEPROM memory chip. Great simple easy to use interface.

Great app!!

Fantastic little app. Was debugging a network the other day and this handy little tool calculated the CRC 64 checksum perfectly for me to verify the processor was working correctly. Definitely recommend it for anyone needing to calculate a CRC checksum.

FAQ

What CRC Calculator versions are supported?

CRC Calculator is available for Mac, iPhone, iPad, and iPod. It was last updated on April 13, 2026, with version 3.1.

How does CRC Calculator generate check bytes?

CRC Calculator generates cyclic redundancy check bytes by performing polynomial division on the input data. It supports generating 8, 16, 32, and 64-bit check bytes.

Can I input data from files into CRC Calculator?

Yes, CRC Calculator allows you to source data from a file through its integrated document explorer. You can also manually enter data in hexadecimal format.

What CRC formats does CRC Calculator support?

CRC Calculator supports both normal (most significant bit first) and reversed (least significant bit first) formats for generating CRC check values.

What is the age rating for CRC Calculator?

CRC Calculator has an age rating of 4+, making it suitable for a wide range of users.

Does CRC Calculator have ads?

CRC Calculator does not contain advertisements, providing an uninterrupted user experience.

What is the price of CRC Calculator?

CRC Calculator is available for a one-time purchase of $0.99.

How often is CRC Calculator updated?

CRC Calculator was last updated on April 13, 2026, indicating regular maintenance and potential feature additions.