Yes, X2 块:合并 2048 拼图 is free to download, however it contains in-app purchases or subscription offerings.
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X2 块:合并 2048 拼图 has several in-app purchases/subscriptions, the average in-app price is USD 13.85.
To get estimated revenue of X2 块:合并 2048 拼图 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.