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As of my last knowledge update in September 2021, I don't have specific information about a betting app called "Ngawin." It's possible that this app emerged after my last update, or it might not be widely known. If you're looking for information about a specific app or service, I recommend checking online app stores, websites, or relevant forums for the latest details. Remember to exercise caution when using betting apps and make sure they are from reputable sources.