Pick a bomb for your 10 minute timer
Any bomb you pick runs for 10 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
Ten minutes is focus time. This free 10 minute bomb timer suits quiz blocks, station rotations, silent-reading warm-ups, and homework sprints: anywhere kids need a meaningful stretch of effort with a clear finish line.
For assessments, try ten minutes on a short written section, then switch to the quiz timer for per-question countdowns of 15 to 60 seconds. The two pair well: one big block first, rapid-fire review after.
Ten minutes is also the classic screen-time warning at home: when the fuse blows, the tablet goes off. Gentler than a parent’s voice, and much harder to argue with. Need more runway? The 15 minute and 20 minute timers are one click away.
Teaching a class? The classroom timer runs the same bombs on the smartboard, with no ads on the page.