Locking the Instagram chats is not the only feature which this app offers, but also Locker for Instagram or Insta Social media App can also lock the complete Instagram app, which can be accessed only by entering the authentic password or by using fingerprint (if well-matched).

All Android phones do have different types of locks like a Pin Code, face lock, fingerprint, pattern, etc. but there are times when you might have to unlock your phone for some reason. That is when you require extra security so that third person using your phone won't be able to access and read your personal Instagram Chats.
How Chat Locker Works?
Install the Chat Locker for Instagram and open the App, then add a 4-digit pin or set your fingerprint lock.
Allow the required permissions to the Insta chat locker.
Click the + button to open Instagram chats on your Android Phone.
Choose the chats you wish to secure.
Add chats to lock one by one which do you want.
Chat Locker for Instagram is a Social App and can lock both the insta chats and the insta app itself. Install and then using the app is very easy and can be accomplished with a few taps on your Android smartphone. Once the app is configured and the chats added to the locked list, no one will be able to access chats without entering the password.
Stop worrying about your privacy or private information being exposed. No More Cheats to your Social media accounts like whatsapp, Instagram and Facebook. Now you can easily secure your private and group conversations and maintain their privacy using a 4-digit pin
Note: You can add only one chat at a time. If you want to add more chats, then tap on the + button again.
All the locked chats will show in a list you can see the chats only if you have the password. This will apply to all secured chats.