RT Distance app for iPhone and iPad

About
This is a free App for tracing real-time distance information. Including of precise accumulated walking and running distance in specify time slot, number of steps, floors ascended, floors descended, pace, etc. RTDistance software uses three kinds of working mode, respectively of indoor, outdoor, hybrid and user participation assist mechanism to improving test precise.
Directions
This software has three modes of operation. In the home page you can select different modes of operation according to your own environment.
Indoor. The indoor mode use iPhone’s pedometer sensor as data sources, at the same time you need to input your step size information. This input information is very important because different person has different step size. You can measure your step information in advance, meanwhile you can input your distance at the bottom of home page.
Outdoor. The outdoor mode use iPhone’s GPS sensor to make accurate measurements about your cumulative movement distance. This is more accurate than indoor mode but the phone’s battery will consume faster.
Hybrid. Indoor and outdoor combination.