CoronaSDR vs C.md

CoronaSDR is an iOS app for listening to rtl_tcp SDR servers over your local network. Key features: - Live spectrum and waterfall rendering - Demodulation modes: AM, NFM, WFM, USB, LSB, CW - DSP controls: squelch, AGC, audio filters, de-emphasis - Station favorites with import/export - RF controls such as PPM and tuner options (hardware/server dependent) - Diagnostics and a performance-focused pipeline No account is required. Set your rtl_tcp host and port, connect, and tune. Built by Silviu YO6SAY for the radio community.

C.md is a Markdown reader for people who read on their phone. It does not edit. It does not sync. It does not build a second brain. It simply makes Markdown files comfortable to read on a small screen. OPEN ANY FILE Mail, Files, AirDrop, or any app that offers “Open with”. The document is stored safely in the local sandbox — nothing is uploaded anywhere. MADE FOR LONG READS ON SMALL SCREENS • Adjustable font size, line height, heading scale and margins • Day and night mode • Chinese and Western fonts selected independently for clean mixed-language text • Optional first-line indent for Chinese paragraphs • Justified or left-aligned, whatever suits the page MOVE THROUGH LONG FILES • Headings fold and unfold in place • Outline jumps to the section you are actually reading • Reading position is saved and restored automatically EXPORT WHEN YOU NEED IT • A4 PDF with your chosen title, headers and page numbers • Long images for chat apps, social posts, or anywhere Markdown is not welcome • Rich-text copy for email and notes PRIVACY All documents remain on your device. Exports are rendered locally. No accounts, no analytics, no tracking.