There isn't really much difference. 'out' possibly suggests a more thorough try.

Hi, Madam! I'd say the meaning they convey is the same, though there is a subtle difference between try something and try something out 1) try something-to do or use something for a short while to discover if it is suitable, successful, enjoyable etc or to taste food or drink to find out if you like it Ex:It works really well – you should try it. Would you like to try some crisps? 2)try something out- a phrasal verb: * to test something such as a method or a piece of equipment to see if it is effective or works properly Ex: I’m trying out a new computer. * +on-to practise a skill in order to improve it She enjoyed trying her French out on her French friends. So, as you see, "try it "- is a bit more general and "try it out"-is slightly more specific.