Needs additional equipment or improvement – Kello Review

This app is hit and miss. One of the holy grails for any amateur watch collector is a fast, reliable, easy way to measure accuracy in a mechanical watch. Kello tries, but ultimately fails with too many of my watches to merit an exceptional rating. Depending on the movement and acoustics of the case Kello typically has trouble trying to acquire a reliable signal, which if you're a dive watch collector happens annoyingly often. It's also been my experience that watches with a noisier escapement such as the ETA 2824 have a much easier time being measured than the quieter escapement of Miyota movements. I've followed the best practices in the how to guide and came up with the same result consistently.
Review by Say No to Emo on Kello.