InvoicePlane bụ ngwa nkwụ ụgwọ ụgwọ akwụ ụgwọ mepere emepe. Ọrụ a bụ onye nọchiri anya yana onye nwe codebase nke ụdị FusionInvoice 1.x, nke Jesse Terry dere. FusionInvoice bụ sọftụwia mepere emepe na mbụ mana agbanwere ya ka ọ bụrụ ngwaahịa azụmaahịa yana mwepụta nke ụdị 2.x. Kovah, onye ndu oru ngo InvoicePlane, weghaara codebase wee jiri aha ọhụrụ malite ọrụ ahụ: InvoicePlane.