Runner Calculator

Offline running calculator with plenty of calculations:
* pace calculation
* hearth rate + TF max
* IAAF, Mercier and Purdy tables and Czech performance classes
* Split time planning
* Prediction for other distances
* Cadence calculations
* VO2max prediction
* BMI index
* Body fat estimation
* Cooper running and swimming tests
* Anaerobic running test
* Triathlon time planning
* Running and expenses
* Yasso marathon prediction
* Basal metabolism calculation
* Performance influence by ascent, weight, altitude, temperature and age