In this guide, we show you how to start a private (Incognito) chat and set an expiry time for the conversation in Google Allo. Once you set an expiry time for a chat, you conversations will be deleted from your device after the expiry time, so prying eyes cannot see/read your chat or history.
How to Start Private (Incognito) chat and Set Expiry Time in Google Allo
- Install Google Allo from Play store here, if you have not already installed. 
- Open Allo and tap on Chat button (messaging icon) shown at the bottom right of the screen 
- Tap on ‘Start incognito chat’ option 
- In the next screen, select a contact with which you start the private chat. You can select a person from the list or search using the search option. 
- Now, you are in Incognito chat mode. 
- By default, the expiry time is set to 1 hour. To change the expiry time, tap on the ‘timer icon’ shown at the top right of the screen. 
- You can set expiry time from 5 seconds to indefinite. You can also select expiry time ‘Off’ Note that the expiry time will not apply to all chats. It only applies individual text/media messages performed in incognito mode, which will be automatically deleted after the set time expired.