There is no reliable single number here
We did not find comparable independent decibel measurements for the three catalog models. A manufacturer’s percentage reduction or a casual video cannot be treated as a controlled cross-product test.
Meaningful comparison would need the same floor, microphone position, room, bounce method and background sound level. Change those conditions and the recorded result can change too.
What you hear is only part of the picture
Impact sound in the room and vibration through the floor are related but different. A foam ball can sound softer nearby while someone below still hears repeated impacts. Shared walls and hard reflective surfaces can also affect the experience.
A practical home check
Ask permission where necessary, choose a daytime period and start with a handful of gentle dribbles. If possible, have another person listen in the space you are concerned about. Their feedback is more useful for your building than a generic “silent” promise.
A phone recording can help you remember a trial, but we do not treat it as a calibrated sound measurement or a universal acceptable-noise threshold.
When to stop bouncing
If it disrupts someone, violates building guidance, or requires an unsafe surface to muffle the sound, switch to a no-bounce session. Our routine tool includes that option.
Read the apartment setup guide before buying equipment specifically for a shared building.
Sources & further reading
Sources reviewed October 21, 2026. Product statements are manufacturer claims unless noted; we have not independently tested these balls.