Shows the current Heart Rate Zone in %, depending on the MHR and RHR.

This app calculates a projected finishing time in an 100km ultra based on time elapsed, distance remaining and current average speed.

Counts down from 30 seconds after pressing lap (improved version)

**disclaimer, i do not endorse the use of this calculator as an absolute intake measurement device. This app is designed to give a rough guideline as to how much water should be consumed within a given time (not distance). Only you will know what is appropriate for your own body. The formular is based on needing 750ml per hour.

Measures energy consumption per kilometer.

Difficulty of our track, like UTMB points. Distance + Ascent / 100. Each 100 meters of ascent counts like each 1 plain km

50K time calculates your estimated finish time for a 50k ultra in real-time. This is only moderately useful as the changing terrain cannot be factored. Include this app in your running mode and use it pace yourself on a 50k ultra.

A useless measurement from a useless device

Fat burner app. This app assumes an optimal HR% around 65% MAX HR (in the middle of between 60%-70% MAX HR). Set this app in one of your custom sports modes to show your real-time difference. Keep it between -5% or + 5% . Good luck!

I like to see HR value and % of max HR at same time.

This app calculates the current training zone, depending on the MHR, RHR and current Heart Rate

Measures the body exertion during exercises and how fit you are. Best athletes achieve near 1%. Usually it is around 5% and non-trained people gain more than 5%. This formula calculates Cardiac drift between previous and current laps during Steady exercises! Laps should be near equal as distances or times.

Run against yourself

See your average pace minutes taken per km

Shows how long you will have to run with your current avg speed till you reach the finish line.

Shows how long you will have to run with your current avg speed till you reach the finish line.

Get real time estimate for you marathon time. App calculates the estimate based on your average speed and the current speed you are running.

Show your Recovery Time in hours during your exercise with the use of an HR belt.

This App calculates how many gels you should have taken during your triathlon race (or what ever you do). Based on your calory consumption and gel calories. Gel calories is based on Powerbar

Shows how long you will have to run with your current avg speed till you reach the finish line.

How fast you are running compared to Usain Bolt in his fasted 100m time (38.18 km/h).

This is a rest countdown of three minutes for weight training. Press lap after doing a set and it will show you how long you have to rest before the next set.