Kardia represents a significant advancement in personal health technology, providing FDA-cleared electrocardiogram monitoring through companion hardware devices. Developed by AliveCor Inc., the application bridges clinical-grade cardiac monitoring with consumer accessibility, allowing users to capture arrhythmia data outside traditional medical settings. The core functionality centers around seamless integration with KardiaMobile, KardiaMobile 6L, or KardiaBand devices, which capture medical-grade EKGs within 30 seconds without requiring conductive gels or adhesives. The application processes these readings to detect common arrhythmias including atrial fibrillation, bradycardia, and tachycardia. Additional features include automated result interpretation, secure cloud storage of historical data, and direct sharing capabilities with healthcare providers through generated PDF reports. User experience demonstrates generally intuitive operation, though interface limitations exist. The recording process involves placing fingers on electrode pads while maintaining device contact with the body, with visual and auditory guidance throughout measurement. Navigation follows standard medical app conventions, though some users report excessive steps for basic functions like landscape view orientation. The application maintains consistent performance across supported Android devices when used according to manufacturer specifications. User feedback reflects generally positive experiences with noted concerns about monetization practices. Keith Lipman's July 2025 review highlights frustration with platform-specific screenshot restrictions and the $9.99 monthly fee for medication tracking features. Tita A's June 2025 review praises the hardware convenience while criticizing frequent upgrade prompts. Multiple reviews indicate successful arrhythmia detection when used properly, with Wendy Braswell's June 2025 experience suggesting device performance correlates with handset quality and proper usage technique. The application delivers exceptional value for cardiac patients requiring frequent monitoring between clinical visits, though potential users should consider the subscription model for advanced features. Strengths include clinical-grade accuracy, portability, and seamless physician integration, while limitations involve aggressive monetization of basic features and occasional interface inefficiencies. Ideal implementation involves partnership with healthcare providers rather than standalone consumer use.