Pick a bomb for your 8 minute timer
Any bomb you pick runs for 8 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.
✓All bombs and worlds unlocked. Thank you for supporting BombTimer!
Using another device? Restore your unlock
Other timer lengths
Eight minutes is the short station. This free 8 minute bomb timer fits center rotations for younger grades, writing warm-ups, partner projects, and the deep-but-not-too-deep cleanup that one shared playroom always needs.
For rotations, eight minutes hits a sweet spot: enough time for real work at each station, short enough to fit four rotations in a typical block with transitions to spare. Tap Run it again between groups and the next crew is on the clock.
Need a rounder number? The 10 minute bomb timer is the classic, and the 5 minute version handles quicker resets. Custom covers any length up to an hour.
Teaching a class? The classroom timer runs the same bombs on the smartboard, with no ads on the page.