Like the chrono, but the app is quite clunky. - Athlon Optics Rangecraft Velocity Pro Radar Chronograph, 2.4 in Display

The Chrono works fine, but is a little limited in how you can notate the shooting session. The app that you download to your phone is a bit clunky. Does not always work the intuitive way and does not always sync the new sessions you just fired at the range. If you like keeping detailed complete records of your loads and shooting sessions, this is probably not for you, it is not easy to use and is really lacking in features to edit bullet and rifle data and specs, my opinion. Got it on sale, but still not sure it was worth it..