After my recent mechanical heart valve surgery, I faced a new reality: lifelong warfarin therapy to prevent clots. Frequent lab visits for blood draws, doctor calls till INR stabilizes, chaotic spreadsheet to keep the data... As an IT guy with a clotting disorder, I knew manual tracking wasn't cutting it. I discovered the CoaguChek INRange device and built Warfarin Diary. Born from my own frustrations, it's a simple, intuitive app to log your INR results, warfarin doses, and see real-time trends. Visualize spikes, dips, and correlations with diet or meds. No more guessing—get insights that help you stay in range and live freer. If you're on warfarin like me, feel free to use it. I created it to reclaim control over my health, and now it's here to help you do the same.