I'm a little slow
. I don't see a free trial. Where is it on that page?
Three versions of the software.
you select a package
and download the package
and you don't pay.
Just use it.
Everytime you open the software,
it will ask you if you want to purchase the program.
If you say "later",
then it goes onto the program
and you get to continue to use it,
but a clock keeps track of how many days
it has been since you first downloaded the program.
So, download the program on the day
you plan to use it.
If you only want to figure out what arrow combinations
work for you,
then select shaft selector for $9.95.
If you want to print sight tapes and play with arrow combinations,
then I would get the entire program,
Software for Archers, for $25.
The SFA is a really great program.
There is a simulation tab,
where you plug in say pin setting = 30 yds.
Then, you can pick a target face
or a 3d animal
and select an aiming point
for a 35 yd shot.
Maybe you select the aiming point
as the top of the 5 ring for a NFAA face,
and then hit enter.
The program figures out the ballistics
and tells you where the arrow will hit,
based on putting your 30 yd pin
at the top of the 5 ring
for the 35 yd shot.
You can even program in the wind speed
and the direction of the wind!
This is after you have
selected your specific bow
at your draw weight
with your arrow!