I am satisfied with the program; it is regularly updated, and the first update came just a week after purchase. The program cost 2,500, but it has no time usage limitations. It works great in conjunction with Lparser from the same developer, which I bought quite a while ago. Linviter does not have built-in parsing, but you can work with pre-prepared lists. The developers encourage the purchase of additional software. The software is convenient, but it's not easy to figure it out right away. A manual covering all functions was included, and it took me several days to study it. The interface is pleasant, and everything is in Russian. I use the program cautiously to avoid blocks. In the settings, you can set intervals so that invites or likes during mass liking are sent less frequently, and I always use proxies to avoid sanctions so far.