Couchbase Lite, part of the Couchbase Mobile suite, is a NoSQL database SDK designed for easy integration into mobile applications, particularly iOS apps, as demonstrated by Matteo Sist. This guide explores how developers can perform essential CRUD operations—create, read, update, and delete—using Couchbase Lite, highlighting features such as document creation, retrieval by ID or query, and the ability to update or delete documents with conflict resolution options. Additionally, it introduces the Sync Gateway feature, which facilitates remote database synchronization through a replicator configuration, enabling one-time or continuous data replication with features like authentication and replication status listeners. The article underscores the simplicity and effectiveness of Couchbase Lite, encouraging developers to explore its full potential to enhance mobile app development.