How to appear offline on imo on iphone6 although you're online

I'm a user of imo on my iphone 6. I would like to know if there's any way that I appear offline although I'm online.
This means that I don't like to be seen under my name on the top when was the last time I've used imo. I couldn't find any option on settings.
Asked Feb 14, 2016

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.