@Kareem , I took hint from Stackoverflow itself to load the fonts but could not get it working in first go. May be following steps can help you .
- Add the font files to your project.
Make their entries in info.plist file
such as 
you can now implement some method that loads your font somewhere in
application delegate
like
-(UIFont*) CustomFontWithSize:(float)size{
UIFont* customFont = [UIFont fontWithName:@"FX_Masa" size:size];
if(customFont == nil)
customFont = [UIFont systemFontOfSize:size];
return customFont;
}
If you notice then the name I have passes here is "FX_MASA" and not FX_MasaRegular , this was the point where I was wrong. The name that we need to use while fetching the font is the INSTALL NAME (Double click on the font to install the font on system and the name that appears in Font Book is the install name).

Hope this helps your problem as well. In case you come across any good method, please update here.