Libre by Abbott represents Abbott Diabetes Care's mobile solution for users of FreeStyle Libre 2 and 3 continuous glucose monitoring systems. The application transforms smartphones into primary diabetes management tools by wirelessly receiving sensor data and providing real-time glucose visibility without fingerstick calibrations. This positions the app within the growing digital health market as an integrated companion to medical-grade wearable technology. The core functionality centers on automated glucose monitoring with readings updating every minute directly to compatible Android devices. The system captures comprehensive glucose data, enabling pattern recognition through visual graphs and historical trend analysis. Users can review how food consumption, physical activity, and medication affect glucose levels over time. Optional high and low glucose alarms provide discreet notifications, though these require specific sensor compatibility as indicated by the developer's footnotes. User experience demonstrates a streamlined interface designed for frequent daily interaction. The application prioritizes readability with bold typography and intuitive navigation between screens, as noted in user feedback. Real-world usage patterns suggest the app serves both routine monitoring and emergency alert scenarios, though some users report significant battery consumption on certain devices. The design emphasizes accessibility for regular glucose checking while maintaining discrete operation in social or professional settings. User feedback reveals consistent appreciation for the convenience of phone-based monitoring, with Teri Browning (July 4, 2025) noting elimination of fingerstick testing. Multiple reviewers praise the interface improvements over previous versions, with Rita Voorhis (July 31, 2025) describing bolder lettering and smoother navigation. However, Edward Pyrek (June 16, 2025) identifies limitations in data entry flexibility, noting inability to add retrospective entries or view chronological data lists. Battery consumption emerges as a significant concern, with Donna Mellow (June 4, 2025) reporting rapid drain on Pixel 7 Pro devices. The application demonstrates clear strengths in continuous monitoring convenience and pattern analysis capabilities, though faces challenges regarding battery optimization and data management flexibility. Ideal for users already committed to the FreeStyle Libre ecosystem who prioritize real-time alerts and trend visualization over detailed historical data manipulation. The app serves best those requiring constant glucose visibility without separate reader devices, provided they can accommodate the power consumption requirements.