They seem to have posted the names of several apps using their SDK, and apps in the App store are required to include developer contact info. Write a few of the developers of recent apps using their toolchain, and see if any of their replies give you enough confidence.
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他们似乎已经发布了多个使用其 SDK 的应用程序的名称，并且应用程序商店中的应用程序需要包含开发人员联系信息。写一些最近使用他们的工具链的应用程序的开发人员的文章，看看他们的回复是否给你足够的信心。
They seem to have posted the names of several apps using their SDK, and apps in the App store are required to include developer contact info. Write a few of the developers of recent apps using their toolchain, and see if any of their replies give you enough confidence.