I got an unlimted Skype deal c $15 per month in a ltd list of countries inc Denmark and Czech republic but not Slovakia where Ill be soon.

I can buy a local sim cheap but a hassle

Any idea if I use skype on non local sim of charges , I've looked on website but none the wiser.

Anywhere in Thailand with free wifi its a free call.

I've looked at Line, non runner and I have Viber but although sound quality similar and ease of numbers it is not best solution as some of my older less techie friends only have Skype?