Say what you will about Allo, good or bad, but don’t suggest that the developers aren’t busy with new features. Each update typically brings some change to the interface, and sometimes it happens even between updates. The latest example is a new edit button that now appears at the top right of images and custom stickers (not regular stickers) in the chat window. It can be used to quickly take an image from chat, make changes, and post it for others in the conversation to see.
Images in Allo chats may now include an edit button for some users was written by the awesome team at Android Police.