IdeedVasta
this screenshot - from fuellog app https://play.google.com/store/apps/details?id=ch.simonmorgenthaler.fuellog
I think that this program is also in the dialogue system keyboard.
But maybe I'm wrong
I don't understand but maybe you're talking about fuel calculator. To calculate cost for your trip. This is on my TODO list.
Customer support service by UserEcho
What keyboard? I see no links. Fuelio uses your system keyboard.