This is a timer app specially made for World School Debate Format. It contains two timing modes, the eight minute timing mode and the four minute timing mode.
As for eight minute timing mode, the alert sounds 1m, 7m, 8m, 8m10s, 8m20s, 8m30s for appropriate durations.
As for four minute timing mode, the alert sounds 3m, 4m, 4m10s, 4m20s, 4m30s for appropriate durations.
Some Icons are from flaticon.com.