With iOS, bug reporting in opt-in only. Here's a quick reference about how to enable and disable bug reporting.

1) Main Settings

2) Settings -> Privacy

3) Settings -> Privacy -> Diagnostics and Usage



6) Here's an example of what the developer sees:
Note that no personal data is shared. Only device type and iOS version is shared with developers.

This was made January 2, 2017. Please notify me if this becomes obsolete with future App Store or iOS updates.