The +370 app is designed for iPhone users to simplify the process of updating contact numbers in light of the upcoming changes in Lithuania's telephone numbering system. Starting March 1, 2025, users will need to replace the old prefix '8' with '0' or the country code '+370'. This app provides an efficient solution for managing these updates seamlessly.

Key features of the +370 app include the ability to automatically update all contacts with the new prefix, create backup copies of contacts, and perform bulk updates with just a few taps. Users can also access application updates and support for ongoing contact management. With over 100,000 contacts already updated, the app aims to prepare users for the transition smoothly.