Build a Andorid App with Google Sheet as Back-end

Finance management Application- Personal usage: 1. A simple Mobile app with a login page and a Portfolio maintenance page 2. Login ID, Password can be stored in a Master Google Sheet 3. For each Login Acct - a slave Gsheet will be provided 4. The App uses master sheet to login and uses the spreadsheet ID from master sheet to read/write the slave GSheet data 5. The portfolio page should contain few dropdown , text boxes and some buttons like (Submit, Reset, Delete and Update 6. Coding logic to replace all the calculations done by Formula 7. Some Graphs needs to be displayed at the bottom All the logic is already implemented using Google Sheet formula's and Java Script by myself. Just needed a UI to perform the same in mobile. Uploaded the Gscript version of the application. (I'm a software engineer myself, just do not have enough time to work on this) Expectation: 1. Someone who is having prior experience in Android app. 2. Project should be completed within 1 month 3. Would be interested in new-comers, who are ready to prove themselves 4. Payment will be made only after I test the application Kindly get back to me for any queries