You can view all transactions between you and a certain contact.

To view transactions:

  1. In the upper right corner of the main screen, click the contact icon.

  2.  Select the contact and open the chat with him or her.On the chat screen, you can view a list of transactions with comments.

  3. If you want to view the history of transactions without comments, click the contact's avatar.

  4.  Click Operations history. 

You can also see a list of your transactions in the ton.live blockchain explorer.