Tumblr adds stickers and filters to its Android and iOS apps
Of course, this isn't just a one-off. Tumblr will be adding new permanent and limited-time stickers each month to keep users happy and maybe encourage them to buy sticker packs when the time to monetize is right. According to TechCrunch, Valentine's Day and Black History Month-themed stickers are en route and coming in February.
If you have the Tumblr app installed, the new features should be available right now unless you prefer to update manually.