Levain Lantern is an app designed for tracking sourdough and wild fermentation processes. Users can create and manage multiple ferment batches, documenting details such as starter health, dough timing, and room temperature. The app allows users to input and record bake results for each batch. Users can view their fermentation history and make notes on each batch for future reference. The interface provides sections for entering specific measurements and observations. Users can also organize their batches chronologically or by specific characteristics. The app aims to assist users in improving their fermentation practices through systematic tracking and documentation.