Intuitive transaction direction selection

[LucPrestin]

As a user, I'd like the selection of whether a transaction is an expense or an income to be more intuitively doable so that I don't keep being confused by it when a transaction is an income although I intended it to be an expense.

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Hints & Thoughts

• To enter an expense I intuitively tried to enter a negative number
• When that did not work I tried to tap the plus icon to toggle it to a minus
• Only after a lot of confusion, I tapped on the FloatingActionButton just out of "maybe on of these buttons does what I want so I'll just press them randomly".
• The FloatingActionButton is too far away from the amount field so that you don't link them mentally right away
• One way to fix this is to add a drop down selector for that right above the amount input and not display the + in front of it
• Another way would be to detect the direction automatically by it being a negative number or a positive one. This would be closer to how people calculate their expenses usually, so I'd personally favor that.