Find friends in crowded places by sending a -coded signal. Receive messages blinking lights and respond by waving your phone. Set custom colors and messages to identify each other during events like concerts or movies.
Tracks current speed and speed limits using -based road sign detection and OpenStreetMap data. Displays speed warnings in real time. Alerts users to zone 30, inner-city, and implicit speed limits. Shows speed and at a glance.
Write and edit Markdown documents with support for footnotes, tables, and cross-references. Sync text across Mac, iPhone, and iPad devices. Access documents offline and search through all text. Export Markdown files.
Monitor earthquakes with real-time updates and GPS compass maps. Display professional data including altitude, orientation, air pressure, and coordinates. View environmental metrics like humidity and temperature.
Monitor vehicle performance with real-time gauges and graphs. View fuel economy data and track driving patterns. Access the on-board ECU to troubleshoot malfunctions. Receive alerts for potential issues and save money on fuel.
