I need a very lean piece of software that lets me import raw INR (International Normalized Ratio) test results—either typed in manually or loaded from a simple CSV—and immediately see the numbers plotted in a clear visual format. My main requirement is data-visualization; the first version only needs to turn the numeric values and dates into straightforward line or bar charts so trends are obvious at a glance. Here’s what I’m looking for right now: • A lightweight web or desktop app coded in Python, JavaScript, or any language you prefer—as long as it runs without expensive licenses. • A clean, single-screen interface where I can add, edit, or bulk-upload test records. • Automatic rendering of the graph as soon as new data is saved. • An export option (PNG or PDF) so I can share the visual with clinicians. With this tight scope and modest budget, think of it as an MVP: no advanced dashboards, no alert engine—just solid, readable charts built on a reliable charting library such as Matplotlib, Plotly, or Chart.js. Include the source code and a brief read-me so I can install or host it myself. If you’ve built similar health-data visualizers, please share a quick demo or screenshot. I’m ready to start as soon as I find the right developer.