Very inaccurate compared to other apps – Kello Review

I comped results with Hairspring, Watch Tuner (which returns beat error and amplitude) and a hardware time grapher. The results were consistently off (in comparison to other measurements by the aforementioned which were very similar). For equal money look at Watch Tuner. I measured an Omega 286, 30T2 and 2 ETA 2924-2s (with different grade finishes) to determine accuracy of results.
Review by AxisLinn on Kello.