welcome and thanks! looking forward to it :)
No, do not install anything on the gear
1. Install Snapchat on phone from Play Store
2. Login and get snapchat working on phone
3. Install snapchat micro on your phone
4. (Optional - only needed if contacts are not seen in snapchat micro) open...
clean and simple i like for now lol
i have tried it and works great... no problem so far