Android Question An easy way to get phone data to me?

Do you want to install Dropbox on each device? If yes, and Dropbox is configured with the same account then you can base it on this library:
Dropbox Sync Library

I recommend you to get a shared hosting and use this solution: Connect Android to MySQL Database Tutorial

I was thinking perhaps along the lines of having the app linked to my dropbox account (somehow - just for ease of data collection) like an upload of some-sort if possible (not syncing) every time a person presses the submit button for example.

I'm not sure about the MySQL route - I don't want the person retrieving info (at this stage anyhow) -

Imagine a simple questionnaire form and that is sent to me with checkboxes Yes/No - I'd like to receive the data as a simple csv file linking field to answers given. It's a uni project collecting answers from those who participate in an experiment. Later down the line it could get more complex such as lookup and compare but for the minute I'd like to start with a basic concept as a new learner that I could create

Each single phone app's answers arriving to a central place where I can bring the data collected together.
Thanks for your reply

You will need to install Dropbox app on each device and link it with this account.

I don't want the person retrieving info (at this stage anyhow)

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They don't need to retrieve anything. You can do whatever you need with MySQL.

It will be much easier and more reliable to build such a solution with a real database server.