iELOrating

Instructions

1. Enter your rating
2. Enter your opponent's rating
3. Select the result of the game with the slider
4. Select your k-factor (0...30 games --> 25, 1200...2400 --> 15, 2400... --> 10)
5. Touch "Calculate! "
6. If you want to calculate the next game just enter the next opponent rating and touch "Calculate!"
7. Press "Reset!" ... to reset!