Qalculate! ndi chowerengera chamitundumitundu chamitundu yosiyanasiyana. Ndi yosavuta kugwiritsa ntchito koma imapereka mphamvu ndi kusinthasintha zomwe nthawi zambiri zimasungidwa pamaphukusi ovuta a masamu, komanso zida zothandiza pa zosowa za tsiku ndi tsiku (monga kusintha ndalama ndi kuwerengera peresenti). Zomwe zili ndi laibulale yayikulu ya ntchito zomwe mungasinthire makonda, kuwerengera mayunitsi ndi kutembenuka, zosinthika zakuthupi, zowerengera zophiphiritsa (kuphatikiza zophatikizira ndi ma equation), kulondola kosasunthika, kufalitsa kusatsimikizika, masamu apakati, kupanga chiwembu, ndi mawonekedwe osavuta kugwiritsa ntchito (GTK + ndi CLI).