How does Spren compare to other body fat measurement methods?

Other common body composition methods such as DEXA and underwater weighing are expensive specialty screenings that require travel to a facility where a screener must be present to administer the test. These methods can vary extensively, ranging anywhere from 5% all the way up to 15% difference in body fat percentage scores.

Bioimediance scales have been particularly noted for their inaccuracy. A study published in the Journal for Exercise and Nutrition looked at the accuracy of bioimpedance scales, concluding that “Caution should be taken when using BIA devices to assess BF% as devices demonstrated unacceptable agreement compared to DEXA.”