Altimeter not need phone signal or internet connection to work with high elevation accuracy. Accuracy improved geoid compensation. Ideal for hiking, treking and climbs in medium and high mountain, where the telephone is often lacking and 3g hedge.
Improved Altimeter Offline Version.
Includes a live elevation chart.
  Improvements: more precisely, to write data to your routes (elevation chart, maximum height, initial height, climbed, cumulative height, average height, date ...), record your historical record of maximum height and adjusts the refresh rate of the sensor to save battery.
Geographical coordinates displayed(longitude and latitude).
This application saves your highest elevation automatically.
Only need a phone/tablet with GPS sensor.
Know your altitude always.
Elevation showed in meters and feet. High accuracy in elevation data.