I know this is the very first version of the app so we can expect some bugs. I think I have found a couple of them:
1) Of all the dictionaries I loaded, there were 2 GD couldn't index. It doesn't display any error it just returns to the menu where you can select the dictionaries to add to the index. The dictionaries with this issue are Babylon_Spanish_English_dictio.BGL and A_Spanish_English_Dictionary_Granada_University_Spain.BGL
2) It seems GD doesn't remember zoom setting on restart and the default one is to small for me. Edit: Now it works correctly. Not sure what happened.
3) Some phonetics symbols show a square glyph. Examples: "ʊ", "ɒ", "ʹ". I guess is a font issue.
And now let's continue with some features requests; can we expect any of these in the future?:
1) Select/Copy text in the dictionary results.
2) Lookup selected text in the dictionary results.
3) Dictionary groups so we can enable/disable specific dictionaries and no need to reindex. This is partially covered by the button language pair.
4) Morphologies support if there are no entries found.
5) An iOS version would be great. Any plan to have GoldenDict in our Apple gadgets?

Finally, I also noticed that you added lingoes ld2 format to the mobile version. Are you going to add support of this to the desktop version? Personally I don't mind but it's another format choice for some people.
Regards,
Chulai