We need mobile for offline and online both to work. I mean user can update the data when online, But if user not online still they will open the apps on mobile and save the data entry. and when ever user come in online data will be uploaded automatically or user can also have option to upload on server manually the saved off line data. So admin of apps can view data per user wise.
We need Android apps and iOS both.
Please answer the Question in your bid proposal - how to going to achieve this online and offline apps? write in details logically, other wise i will not respond. Apps we can use hybrid apps so there is no problem, So you can use any.