Use APKPure App
Get Gravity Falls Stickers - WASticker old version APK for Android
30+ Gravity Falls Stickers for Whatsapp
Gravity Falls Stickers for WhatsApp
app is on Early Release, gonna have a lot more of stickers soon
some Stickers are from here (i'm nice person and i give credit):
• https://melbournechapter.net/explore/gnome-clipart-gravity-falls/#1
• Nucleus Art Gallery