@sawin
At least you realized it. You can also take some comfort in knowing not all these 3rd party unofficial apps are a scam. Some are developed as projects in an effort to provide a feature the developer sees as lacking in the official version.
However, I haven't really come across one recently that performs any better than the official Roku mobile app. (and the official mobile app doesn't have pop-up ads , so there is that also.)
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The official Roku app info can be found in the Roku Support pages. (Knowledge base)
https://support.roku.com/article/217288467 (How to install the Roku mobile app)
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
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