AARRR

acquisition

- customer acquisition cost CAC/CPA

- daily new users DNU

- daily one session users DOSU (一次开关算一个session)

activation

- dailyt/weekly/monthly active users 

- daily average online time DAOT/AT

retention and churn 保留和流失

- day 1/7/30 churn/retention rate

revenue

- active payment account APA

- average revenue per user ARPU (要大于cost per user才是好的)

- life time value LTV (只要一使用产品这个用户会贡献多少钱)

referral

Daily: 是否存在异常（节日，推广，版本更新，事故），渠道表现

weekly: 关注retention and churn