I use Arrownautics, have done for 4 years, really happy with it since you can have multiple profiles - winter,
longbow,
recurve,
compound, etc - with comprehensive notes and sight marks in metric & imperial. It contains aan easily accessed vast array of imperial, metric and international rounds as well as custom rounds you can create and save (Frostbite for example).
You can can score a round with up to 4 archers on a target - ideal for a double check at club sessions or comp (don?t get caught by a judge haha) Plus all records can be emailed and printed in full colour or b&w if you like that sort of thing
It is versatile and simple to use and I love it however it doesn?t offer arrow plotting or stats
All of this costs ?9.99
My brother-in-law has recently started using iArcher which he is raving about, I think this may offer stats but not plotting - again its ?9.99 but I?ve yet to have a good look at it so cannot comment.
Karl