Regarding the Tickle Kuri APK v0.8.1, here are some features that can be found in this app:

Tap the APK file and follow the installation prompts. After installation, to protect your device from future accidental installs.

Based on developer patch notes circulating on unofficial indie dev forums, version 0.8.1 of Tickle Kuri introduces several key features and fixes:

The v0.8.1 update introduced several customization and interaction upgrades: Customization