The only software I've been able to find on the Internet was from IQ Software http://www.iq-sport.net/en/iq-sport/iq-biathlon/iq-biathlon-software/
There are a lot of dead links on the page, but the Downloads link get you to http://www.iq-sport.net/en/downloads/iq-software-downloads/
where there is some software to download.
There are a number of videos on Youtube of youth events that seem to use this software.
The one time I looked into pricing it seemed that after purchasing the software you also needed to pay an annual licence fee.
Also the first page mentions having to purchase a USB adapter.