Hidden content, alternate outfits, and secret unlockable characters like Momo.
If you are referring to the within the game itself: huniepop android upd
The most stable way to experience the latest updated version of HuniePop on Android is via local streaming. Install the Steam Link app from the Google Play Store. Turn on your PC and launch Steam. Connect your Android device to the same Wi-Fi network. Pair the device and stream the game directly to your phone. huniepop android upd