BarValid checkDigits is an intuitive app to calculate check digits of different barcode types, but also other common code types (like the IMEI code).
Just select the desired code type and barValid will calculate the check digit of a given code.
Actually, barValid checkDigit supports the following codes:

This new version introduces new code types, for which the check digit can be calculated.
The complete list of supported code types:

* EAN8
* EAN13
* UPC-A
* ISBN10
* ISBN13
* IMEI
* Credit Cards (PAN)

If you need additional code types- please write us an email