English Language Learning App

Hello, I wish to create an English Language Learning App with similar functionality that can be seen at [login to view URL] Please provide me with an estimate based on the following. It would have a splash page, linked to a scrollable page containing 10 iCONS/images associated with 10 Levels starting with 100 Everyday Qs and As for each of the first three levels: Level 1 Beginner Level 2 Elementary Level 3 Pre Intermediate Once user has chosen the dialogue he/she gets a view with links to three options A) TRAINING MODE B) TEST MODE ie AUTOMATIC RESPONSE MODE C) PLAY MODE (this is just a link to sign up/log in at my website for quizzes to complete/games to play) MODE A) will have, similar functionality that at [login to view URL] ie it will show a) the Vietnamese sentence, b) the English sentence. It will also have c) the images inside the dialogue balloons. In this mode 1) the user clicks on an icon to hear and see the English sentence (a banner also appears underneath as at bravolol) 2) User has option to record his/her voice recording and hear/compare 3) User is automatically scrolled to next sentence in the dialogue 4) User can see a button at page bottom which, when clicked allows user to hear all of the sentences in sequence. 5) At end of dialogue/level user is offered a rewarded ad to optionally view and continue with another dialogue/level/mode MODE B) in which the user listens to a sentence or question and has to listen to choose correct answer from 4 possible answers Further information will be provided once we make contact