Current Altitude + Compass vs TrueRuler

Current Altitude + Compass is your reliable outdoor companion for hiking, camping, and exploring. Get accurate elevation readings, a real-time compass, air quality updates, UV index, and a handy flashlight, all in one easy-to-use app. Track your current altitude in meters or feet, navigate confidently with a clear digital compass, and check real-time air quality and UV conditions before heading outside. Save key locations offline with GPS coordinates and heading information. Perfect for off-grid adventures, this app works fully offline and keeps your data secure on your device. Core Features: - Digital Compass: Quickly find your direction with precise compass guidance. - Altimeter: View your current altitude in meters or feet, updated in real time. - Air Quality Index: Check the current air quality using the US EPA standard — ideal for runners, cyclists, and anyone with respiratory sensitivities. - UV Index: Know the sun exposure risk before you go outdoors, from Low to Extreme. - Location Storage: Save waypoints with altitude, compass heading, and GPS coordinates for offline reference. - Flashlight: Use the built-in flashlight to light your path anytime. Stay informed and prepared wherever your journey takes you.

TrueRuler is a screen ruler with manual calibration, designed for checking and comparing the length of small objects that fit within your screen. Move the green start guide and red end guide to see the distance between them. Switch between centimeters and inches, or change the ruler direction to suit the object you are measuring. Features • Centimeter scale with 1 mm divisions. • Inch scale with 1/16-inch divisions. • Two movable guides with a direct length readout. • Lock the guides to avoid accidental movement, or reset their positions. • Expand the ruler to full screen while keeping measurement controls within reach. • Calibrate against a reference of known length. • Save horizontal and vertical calibration separately. Measuring requires no account or internet connection. Calibration settings stay on your device. Before measuring Check the scale against a physical ruler before first use, and calibrate each direction when needed. Start from the zero mark shown on the screen. Actual accuracy depends on the device, display settings, and calibration. Decimal places in the readout do not indicate certified measurement accuracy. For iPhone and iPad. Supports device rotation and horizontal or vertical ruler layouts.