Creating a learning application

The services of a mobile application developer are required. It is necessary to develop an application for “memorizing” any data (words of a foreign language, rules, etc.). An example interface in the screen below. The buttons are illuminated in yellow. The rest of the backlights are dynamic output of text information from the file. The orientation is always vertical.

After importing data from the file, sorting is carried out according to the necessary conditions and the “task” and “dop” are displayed. Information from the task" from the current row of the table with data (beige illumination on the screen). The student remembers the answer. By clicking on "answer" the fields "Response" and "DOP" are filled. Answer."" The student checks himself and presses one of the buttons on the right (from "-3" to "+3") (+3 I know exactly, -3 I do not know at all), while on the corresponding line the "Weight" changes to the value from the button and the transition to the next line is made: we output the task from the next line and so on to the end of the file.
After passing the entire file or clicking on the “start” return to the beginning, while the questions with less weight (poorly know) fall out first.