So I hate going to the range, take a shot, Try to read the numbers from my Chrony from the distance (getting old) and write it down and repeat.
Ran across an app for android called 'BlueShot' said it works with the Chrony so I thought I would give it a try. You can try the app as a demo, but not with the Chrony (will get to that later).
I can say that it works as advertised with a US F-1 Chrony.
After a few false errors (user related - follow instruction on website!) the thing worked well, have not taken it to the gun range but using an air pistol it worked fine for 5 shots.
5 Shots, Avg 382fps, SD 1.62, High and Low recorded and then the option to email it to myself, I used an android tablet, but see no reason why it won't work with a phone.
BTW the file that is emailed to yourself is a simple CSV file of each shot, nothing fancy.
The downside is that you have to buy their cable to make it work, I paid $70 US for the 5m (about 15feet) cable, the upside. You can now put something (at a safe angle) in front of your Chrony as you don't need to see the screen (unless you have errors, like low battery, they won't show up in the app.)
Overall I like the app simple to use, it records the shots for me, and I don't have to squint to read the display from the bench. I imagine all I will do is set the tablet up at an incline, shoot, look up from the stock, see the velocity and shoot again.
www.zbm2.com/blueshot
BTW it took almost two weeks for the cable to arrive, but some of that is Christmas, and it is coming from the UK.