However, some major moments should be explained:
1) In order to make the app free of charge, we would have to reduce our team of professional developers. This, of course, would have to be compensated with a huge amount of commercials, which profit/benefit is very doubtful by any means.
2) We could use the same method as other companies, creating so called "placements" and selling them to furniture manufacturers, instead of developing catalogs. Still, this is not the best way as recently some big players went bankrupt due to such a policy.
We use our own method, creating/developing new features which are allowed to test for free before selling.
This particular model allows us us to maintain the most professional team of designers and programmers, limit commercials as well.
In the nearest future we are planing to renounce all commercials and provide a bigger variety of free items and options.
IMPORTANT NOTE: An option to unlock items for free watching ads on Android is also no more valid/active.The same goes with iOS.