LithDict4Droid is the best and most convenient dictionary for both languages. With this application you can look up words, as well as their translations, definitions, synonyms, spelling variants, and grammatical information.

The app is very easy to use. To start, select your language (Lietuvių, Anglų, or Lietuvių) and enter the word you want to translate. After that, click on the translation and you will be shown the translation, definition, synonyms, spelling variants, and grammatical information.

You can also look up words by word-pronunciation.

The main advantage of this dictionary is that it does not need the Internet. Therefore, you will not be debauched on older devices.