Looks pretty, but needs a lot of work.

1: Inaccurate integer rounding for larger values
2: Needs audio feedback with full volume control, not just set to current tone volume.
3: Needs option to replicate functionality of the stock calculator app in at least vertical mode. Maybe even seem location of items.
4: needs option to get rid of top infobar.

Seriously, it needs a LOT of work. Hope the devs are listening.

MadameWinona about Llumino