Currently the development is in its fifth cycle (MVP4).
MVP3:
A small release with regrouping of code to prepare for differentiated handling of sets and a powerfull search page for the catalogue.
MVP2:
Most of the core functionality has been delivered for buying and selling stuff and editing the information.
A split is made between the catalogue listing modeltrain products of interest to the user and the actual inventory of things part of the collection.
A first drop of reports on inventory and catalogue is available.
MVP0, MVP1 : Not for production use
Here the old ASP.NET application was rebuild to a PHP / MySQL net application.