That app doesn’t appear either as a paid ad, or in the search results for the word “Monkey” on the iOS App Store. I’m not sure it even has an iOS version.

It’s not clear how that app is connected with what the OP is describing.

The OP has added the name of a Chinese company, but I can’t see what Apps it is behind.

The app you listed is described as being developed by 5 teens from LA. Perhaps that is the OP’s app?