
Rudy Hassall
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The arrow spine calculator has potential but is not beneficial as it provides underspined recommendations, which is dangerous. It lacks key numbers like arrowhead weight, component weights (insert, collar, screw-in weights), fletching count, length, weight, arrow wrap weight, and nock weight. It doesn't calculate total arrow weight but asks for it to calculate energy. A 3-5 day free trial would help. Used on Google Pixel 6 Pro, Android 15. Not recommended.

Ashley Dorey
Overall, the app is extremely useful, but it is lacking in one area: Compound cam type. Seeing as how the cam shape makes the difference between one spine of arrow and another, I'm disappointed to not see a feature like that implemented. Seeing as I'm a recurve shooter though, I'm otherwise happy with how the app performs for my needs!
1 person found this review helpful
Marcel van Apeldoorn
January 25, 2021
Thanks for your positive review and your comment. As you pointed out correctly, the cam shape can and does make a difference. But instead of using some descriptive term on cam shape, like round, soft or hard, which still doesn't exactly factor in what the cam does to the spine, we chose to go with the ATA speed rating of the bow instead.

B12 KHX
If you want pretty arrow pictures this is the app... But only if you buy the upgrade to unlock all the arrows The previous version was much better in offering a readable table of arrow spines... But why have it all on a single swipe table when you can scroll down for hours The one star is for the drawlength and draw weight selection bar which is usable
1 person found this review helpful
Marcel van Apeldoorn
February 6, 2021
Thanks for your review. We've worked hard on the drawlength and drawweight selection bars so we're happy you like them.