小额收费的理念是：应用程序允许玩家免费下载，但是，如果你想升级你的装备，你需要进行小额付费。
The concept is that an app is free to players to download, however, if you want to upgrade your character, you need to make a small payment to do so. Want to upgrade your game’s levels?
小额收费的理念是：应用程序允许玩家免费下载，但是，如果你想升级你的装备，你需要进行小额付费。
The concept is that an app is free to players to download, however, if you want to upgrade your character, you need to make a small payment to do so. Want to upgrade your game's levels?
许多人抱怨小额支付需要在应用程序上添加额外的层和插件，而在2009年末发布的Square允许几乎所有人通过iPhone接受支付。
Many applications charge micropayments in situ to add levels and add-ons, and Square, which launched at the very end of 2009, permits almost anyone to accept payment via the iPhone.
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