Add option for user input in an existing mobile application. -- 2

I would like to add an option to my existing application that allows users to add translations for any word. Example, a user searches for a word and once the result is shown, they can add a translation for another language. This would happen via a click and once that button is clicked, the user will be prompted to a new screen where they will choose and fill out the different options. Once the user clicks submit the change is saved and can be seen and accessed by anyone that searches for that word. After the changes have been made, an existing button will show the user what translations are available and what language the translation is from. If no translation exists, then a message will appear informing the user that no translation exists. There should also be an option for the translator to record and save their audio. I need to know all the details that are required for this to work properly, example, if a database is required, etc.