The best part of rumbelink is that it has some features which are not available in other group chat applications like live support option etc. I have been using this since 2015 and never faced any issue with this app till now. Sometimes there could be lags when you try to post something or reply but nothing much serious because its very simple application. If you really want to work from anywhere then Rumbelink will definitely help you as it allows you to do so at ease without worrying about office timings or location. As I said earlier, if you're working remotely then this is your first choice for such stuffs. We used to communicate across different offices while we were freelancers or working remotely. This helped us save time and money too.