Calculate Maidenhead locations and HF dimensions. Input frequency and select elements to determine reflector, driven element, director, and spacing sizes in feet, inches, and meters. Convert area measurements between square inches and square feet.
Record videos with speed, location, time, and date overlays. Live preview shows real-time footage except for settings overlay. Save videos to documents for download via file sharing or export to roll for viewing.
Calculate costs based on miles per gallon or liters per 100km. Determine cost per mile or kilometer. Compare fuel cost differences between vehicles. Estimate duration. Convert units between miles and kilometers.
Track vehicle movements with 180-day historical playback. Monitor multiple vehicles under one account with real-time alerts and state queries. Support GPS, GLONASS, Wi-Fi, and LBS for precise positioning. Enable car checks via , web, and WeChat.
Displays current speed, average speed, time, heading, altitude, trip elapsed time, and distance/time/direction to a stored home location. Provides short-term weather forecasts. Adjusts transparency of Apple Maps screen. Controls iPod playlists.