Find your current magnetic declination based on the World Magnetic Mode. Specify your position via GPS, lat/lon coordinates, UTM coordinates, or browse the world map. Use Declination to verify and update your local magnetic declination for all your maps before you enter the backcountry Requires iOS4.3+

Declination alternatives

SkySafari 5 Plus

SkySafari 5 Plus is more than the basic astronomy app, and this is its best version yet Its a full-featured space simulator with telescope control. Note that there is no discount upgrade path from SkySafari Plus to Pro. Horizon Panoramas choose from six beautiful built-in vistas, or customize your own For even more features, and a gigantic database aimed at the most dedicated amateur or professional astronomer, check out SkySafari 5 Pro

  • rating 4.64103
  • size 655 MB

Astrolabe Clock

Astrolabe Clock is an astronomical clock inspired by the astrolabe, an ancient astronomical instrument used to tell time and to predict the location of the Sun, stars and planets. This modern interpretation gives a view of the sky showing at a glance the time of day, day of year, and the location in the sky of the Sun, Moon, planets and stars. Astrolabe Clock also gives the time of sunrise and sunset, the phase of the Moon, transit times for the Sun, Moon, planets and stars, and can be used to show the occurrence of solar and lunar eclipses.

  • rating 4.81818
  • size 1.6 MB

ShipVault

Designed for the iPhone, iPad and iPod Touch, this app lets you search for commercial maritime vessels by name and see detailed information such as owner, yard and technical data as well as pictures of the vessel.

  • size 30.7 MB

Sky Time

Sky Time is a simple app that displays Astronomy related times, including Julian Date and Universal Time. It also makes use of your devices ability to sense location to determine the Sidereal Time. * Pop-up descriptions of the times at your fingertips.

  • size 1.0 MB

SkySafari 5 Pro

SkySafari 5 Pro is the ultimate astronomy app. It has the largest database of any astronomy app, includes every solar system object ever discovered and offers flawless telescope control. Horizon Panoramas choose from 12 hi-res vistas, or customize your own

  • rating 4.7195
  • size 1.92 GB