We are pleased to provide the latest installation of CycDesigN.

CycDesigN 5.1 replaces the previous version, CycDesigN v4.1. You can upgrade now and do not need to wait for your current license to expire.

Simply download v5.1, install (it will not overwrite your existing version) and register from the software or contact us.

Site Reference

A site reference number is a unique customer number which is associated with the purchase of VSNi's software. This number is supplied to the software site representative who made the purchase. Please contact your software site representative so you are able to locate your site reference number. Alternatively, if you are unable to get in contact with your software site representative, then please contact us at VSNi and supply us with your full organisation's details, so we are able to help you locate your site reference number.


You will need a valid site reference to download and, to run the GenStat Addin – you will need a licence for both CycDesigN and GenStat.

A valid license permits use of the standalone program or the Genstat AddIn. Further information may be found in the GenStat AddIn installation instructions.