Rounding to the nearest whole inch introduces significant error in the measurement process. The cells are less than half an inch difference in some measurements. This needs to give accurate measurements to 2 decimal places to be usable.

I have profound concerns about this app, and fear it could mislead users. See the similar review by Kapops: Our shared concern is that rounding measurements to the nearest inch may make this app unsuitable for its intended purpose. The app’s promotional copy reads “get precise measurements” and “find your exact mask size”, but how are those claims possible if a fraction of an inch can move a face from one NIOSH respirator size category to a very different size category, and this app rounds all of your measurements to whole numbers?

Nice idea, but not comfortable relying on this as I keep getting different measurements