Learning The Russian Alphabet
Russian Alphabet
This is very simple: you touch the letter and hear the sound. Two out of six letters available at the free version were pronounced improperly. Considering this and the fact that Russian letters may sound differently in different positions, I wouldn't recommend this application. The price for the whole Russian alphabet (33 letters) is 0.99 USD.
cAlphabet
Again, you touch the letter and hear the pronunciation. The audio is mostly good, but some letters are pronounced with an accent. Thus, the letter [ы] is pronounced like [yi] and the letter [t] is pronounced too softly. If you want just to get the idea of what the Russian letters sound like, this application could be useful for you. But if you are working on the proper Russian pronunciation, I would recommend to search for native speaker's audio.
Memorizing Words
Russian Audio FlashCards
A few thousands of Russian words, with a native speaker audio recording for each word, spelling exercises and translation quizzes. The pronunciation of the native speakers is really good. Quiz system is useful for memorizing words. Highly recommended.
Demo version is free, full version will cost you 7.49 EUR.
LangTutor
A bunch of audio and spelling quizzes. An audio quiz here is choosing the word matching the audio, and a spelling quiz is rearranging the letters into the word. Not recommended for beginners, though can be useful for intermediate students. Free version includes only 20 words, full version includes 250 words and will cost you 4.99 USD.