New in version 8.5 and later is the combination Save and + button in the upper right of the new item entry screen. Tapping Save will save the entry and close the editor. Tapping + will save and allow for another item to be added.

Endorsements

Logbook Pro Mobile allows you to track endorsements in all four data areas: Certificates, Ratings, History, and Flights. Your endorser can add their endorsement text, expiration date, and signature with a finger. See the Endorsements page for more details.

...