A household account book used to record and track a family's income and expenses.
毎月、家計簿をつけて無駄遣いを減らしている。
I keep a household account book every month to cut down on unnecessary spending.
スマホのアプリで家計簿を管理している人が増えた。
More people manage their household accounts with smartphone apps.
家計簿を見直して貯金目標を立てた。
I reviewed my household accounts and set a savings goal.