I'm looking for ''Proxima Nova Soft'' font for free, or some really similar font to this one or ''Arial Rounded'' that has Latin symbols.
Is there some of these two?

Free, no, that's stealing. Similar, look here :

http://www.tenbytwenty.com/nevis.php

http://fontfabric.com/nexa-free-font/

Partially free :

http://www.myfonts.com/fonts/synthview/novecento/

Ok, anyway thanks
But i wanted some rounded font with lower-case two-storey a and one-storey g.
I'm sorry i didn't say that about A and G.
Has anyone other idea?

No need to create multiple threads with the same question, the answer will not change...

Hello sir, I can create one for you if you can be more specific and show examples.I would be very happy to give it to you free of charge for personal use; but you have to pay a small amount to use it for commercial use.

Hello there !
I found this thead looking for a free font similar to PROXIMA NOVA SOFT.
It didn't help much actually, but since it's quite well referenced on google, I'll post here the font I found.

It's Nunito on Google Fonts, not exactly the same but for me at least it's close enough.
https://fonts.google.com/specimen/Nunito

Have a nice day