I can't see any button for starting a bounty on the mobile application of Stack Exchange. Could someone please help me on where to find this feature ?
If it's impossible, could this feature be implemented?
However you can do it in the browser.
Then open it in the browser.
Then, start a bounty in the browser. Note: When you login, complete the action with Chrome and NOT the Stack Exchange app.
Then add a bounty in the normal way.