The rules can change the score
Eyes open or closed, footwear, surface, arm position, support, and the timing limit all affect the task. A ten-second result from one setup may not be comparable with a ten-second result from another.
Even the instruction about when the timer stops matters. Touching the other foot down and moving an arm are not interchangeable stopping rules unless the protocol says they are.
Standing still is only one balance demand
Walking, turning, reaching, and responding to a trip require capabilities that a quiet single-leg hold does not fully capture. Someone can perform one task well and still find another difficult.
Use a result for the question it can answer
A clinician may use a standardized balance assessment as one part of a broader evaluation. That differs from an online challenge that assigns a “biological age” from a single attempt.
If informal tracking is appropriate for you, use a safe, consistent setup and record the conditions. Do not remove necessary support to obtain a more impressive score. Recent falls, dizziness, or new unsteadiness are more useful reasons to seek assessment than failing to match a time posted by someone else.
