The Фонетический разбор app by RusTXT is an Android-based program that performs a phonetic analysis of any given word. The app records the word and its transcription, identifies the stress in the word, and divides it into syllables while determining the number of syllables in it. It then analyzes each letter, records its sound, and describes whether it is a vowel-stressed or unstressed, consonant-hard or soft (paired/unpaired), and voiceless or voiced (paired/unpaired). The app also counts the number of letters and sounds and creates a color scheme for the analyzed word.

Phonetics is a branch of science in the Russian language that studies speech sounds and the sound structure of the language. The word transcription is written in square brackets, and additional symbols may be used. In the Russian language, the transcription is based on the signs of the Russian alphabet, with the exception of the signs - ъ, ь, е, ё, ю, and я, which are used as letters in the transcription.