Yes, 潮汐表&潮汐表精灵&洁仓潮汐倒计时天气助手 is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
潮汐表&潮汐表精灵&洁仓潮汐倒计时天气助手 is free.
To get estimated revenue of 潮汐表&潮汐表精灵&洁仓潮汐倒计时天气助手 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.