Pick a bomb for your 15 minute timer
Any bomb you pick runs for 15 minutes. Round Buddy is free to play. Unlock all 50+ bombs and 140+ worlds for $4.99 with no ads. Every bomb is unique! Watch for different animations, sounds, and explosions.
For home
Unlock all 50+ bombs and 140+ worlds
Every bomb is unique, with lots of different booms, and you can put any bomb in any of 140+ animated worlds. Pay once, use on up to 5 devices. Removes all outside ads from this site.
For teachers
Classroom license
Every bomb and every world on up to 30 school devices, for one payment.
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Other timer lengths
Fifteen minutes covers real work. This free 15 minute bomb timer fits independent reading, writing workshop, chore charts, and practice sessions: the moments when focus needs to stretch but attention still wants a visible endpoint.
In rotations, fifteen minutes is the standard station length for upper elementary. Project the bomb and each group paces itself without asking how long is left. The big digits stay readable from the back row of the classroom.
At home it is the perfect room-cleaning length for bedrooms that got out of hand. For shorter resets use the 5 minute bomb timer; for test blocks and bigger projects, step up to 20 or 30 minutes.
Teaching a class? The classroom timer runs the same bombs on the smartboard, with no ads on the page.