We used an inexpensive Chrony for years. They work well once you can find the "zone" they like to operate in. Nice compact package that fits on a cheap camera tripod so it's more likely to go along on a casual range day.
Indoor lighting can wreak havoc on the readings sometimes, and if there is a flourecent tube in the vicinity, forget about it. Any flickering at all disrupts the readings and flourecent lighting is all high speed flickering too fast for the eye to catch.
Once we got used to it, we were able to chronograph everything from .177 pellet rifles to the 22-250 with sastisfactory results.
Arrows...no. The screens aren't far enough apart to compensate for the shaft length.
If sastisfying curiosity for an average velocity is all you are looking for then the Chrony is fine. Good for knowing where your loads are in reality instead of trusting published fps figures.
If you are tweaking/checking loads for BR or LD shooting etc where the numbers are much more important, then buy the better machines and screen setups.