budget planner app2 admob monetization1 ai assistant budgeting1 banking app1 banking mobile app1 category based expenses1 csv export finances1 digital finance app1 digital wallet app1 ewallet app1 expense tracker1 expense tracker flutter1 finance app1 finance mobile app1 fintech app1 firebase analytics integration1 flutter finance app1 income expense tracker1 investment app1 investment tracker app1 money management app1 money manager android1 offline first finance1 online payment mobile app1 payza1 personal finance manager1 react native template1 reports charts analytics1 riverpod state management1