- The big, red button where normally there's an "accept" button is very dangerous while editing a task. Delete actions should be small-ish not to be done by accident. I suggest changing that button for an "Accept" one, and setting the delete as an extra row or somewhere not so-easy to click.
- Clickable items are better with a `cursor: hover` on those elements. In that case, you know where you can click in a better way.
- It's a productivity task, so make some things dead-obvious. For example, the fact that you can drag tasks around should not be discoverable by accident. You might want to add an icon or a small text on the bottom of the screen to make it obvious.
The hover to reveal sub-task add button doesn't work well with tablets as you end up opening the task edit first and then you can click on the now visible plus sign.
As @Tommi mentioned, hover isn't a great concept in general, as UI elements are hidden and user has to discover them. Though, this is less of an issue in an app the user will be constantly using.
- Clickable items are better with a `cursor: hover` on those elements. In that case, you know where you can click in a better way.
- It's a productivity task, so make some things dead-obvious. For example, the fact that you can drag tasks around should not be discoverable by accident. You might want to add an icon or a small text on the bottom of the screen to make it obvious.