Choose your bomb
Every bomb runs a 2-minute transition countdown. Pick a preset or set your own time. Three bombs are free forever, and nine more are ready whenever you want the whole crew.
Smoother classroom transitions
Transitions add up fast, and a visible countdown helps. In one classroom study (Ardoin et al., 2015), on-screen transition timers cut transition time by 67% and gave teachers back about 39 minutes of instruction a week. Put the transition timer on the board, give a two-minute warning to switch activities, and let the class race the fuse.
Two minutes fits most quick moves: packing up, switching stations, lining up at the door. Use 3 to 5 minutes for bigger transitions, or tap Custom for any length.
Get the full bomb collection
Three bombs are free forever. Want the whole crew? A one-time $4.99 unlock adds the other nine, yours to keep.
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