From the in-app settings, you can only turn off notifications about hearts (your hearts are back, your friend sent you a heart, etc.). To completely turn off notifications, you would need to change your notifications preference ① in the application and ② on your device.
【Turning off notifications in the application】
1. Tap the wheel icon (Settings) on the top right-hand corner of the main page
2. Tap "Notifications" ※Notifications are turned off when a red sign is displayed on top of the megaphone mark.
【Turning off notifications on your device】
◆iOS
1. Open up the Settings application
2. Go to "Notifications" and choose "Cats Atelier."
3. Turn off "Allow notifications."
◆Android
1. Go to "Settings"
2. Go to "Applications"＞"Application management"＞"Cats Atelier."
3. Turn on "Block all/do not display notifications from this application."
※Uncheck "Show notifications" if it is checked.