Currently, in Field Maps Designer (Form configuration), the Input type options for integer fields are "Number - Integer" and "Barcode" (see screenshot). I suggest adding another (non-default) input type called something like "Number - Integer - with plus-minus buttons".
This would allow the user to increase or decrease the integer value without having to tap in the box, hit backspace, and then type a number. This would be most useful for fields that tend to hold small integer values, like the ones shown in the attached mockup image. This image shows the existing user interface (UI) for integer fields (the "Number - Integer" Input type) plus three possible layouts for how the new option might look in the mobile app. It would work the same way as the existing UI (you could tap in the box to type the number, and tap the "X" to delete the number) with the addition of plus and minus buttons.
