This program - the official Android client Skarnik.by site. It works online.
1. Russian-Belarusian Dictionary contains more than 100,000 words. It is based on academic dictionary, edited by Y. Kolas, K. and P. Glebko Nettles.
2. Belarusian-Russian Dictionary contains more than 100,000 words. This "reverse" Dictionary of Russian-Belarusian.
3. Explanatory Dictionary of the Belarusian language contains more than 95,000 words. Created on the basis of academic publication, edited by K. Nettles - five-volume 1977-1984 gg.
Skarnik finalized taking into account current practices and is constantly updated (adding new words, corrected errors, inaccuracies, and so on.).
Thank you all for your comments and suggestions.