I am one of the ones who bitched and moaned about Dragy's lack of a lap time function, and what do you know they went and added it!
It is a bit late for me as I have been using a combo of Track Addict + Go Pro + GPS and recently bought a Garmin Catalyst but I thought I would drop a post so everyone is aware of the new app.
The 10hz refresh matches that of the cheapie GPS I use, and the GPS offered much better data regarding speeds at different point on the track than my phone could manage, and I imagine it will be the same for the Dragy.

If you have a Dragy the new app is no cost and works with classic Dragy (I believe they are offering a new one with improved refresh rate).
I think it also represents a reasonable low cost option for someone dabbling in open track days, and HPDEs.
My draggy hasn't gotten a lot of use for a while, but if I hadn't invested in other means of doing the same the Lap app would have breathed new life in it.


No relation to the below youtuber.