In-app purchases
101 reviews
Content rating
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About this app

An archery toolbox for calculating proper arrow spine.

In-App purchases unlock Premium Features.

The app uses a configuration created from the user's bow definition and desired arrow parameters.

It is the only handheld app available for shaft selection that is based on bow performance. It has the same features and flexibility as the desktop app available from Pinwheel Software.

You can search by shaft manufacturer, shaft construction (aluminum, carbon, aluminum/carbon), and shaft usage (target, hunting, both).

You can search the database for a specific weight range for a completed arrow (with your components), a shaft diameter range, or a specific percent FOC range. Choose to include or omit discontinued shafts.

Flexible, Accurate, Unique.
Updated on
Jan 29, 2019

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
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101 reviews
YoungBuck 94
November 29, 2021
Pretty good. Useful to be able figure out TAW and FOC based on options. It would be awful nice if you could, oh I don't know, minimize the app and be able to go to the internet and find your bows data(IBO speed, brace height, etc) and not have to completely start all over again and remember everything. Agree with other users, if you pay for an extra save you should be able to delete one and still have that available. Shouldn't have to switch everything up.
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A Google user
April 13, 2019
This is one of the worst apps I have ever used, free or paid. It freezes when moving between apps, and if you pay for 5 saves and delete them to start over you have zero saves available. in other words, your ability to save 5 setups is gone and you need to buy more. I've never used an app as annoying as this and would not recommend it unless you want something portable.
6 people found this review helpful
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Pinwheel Software, Inc.
April 15, 2019
There is a known issue with newer Android OSes when switching between apps..this is a bug introduced by Android/Google..the app is a victim. It should be resolved in the next app version. Older Android OSes worked as you'd expect. Looking into a Rename function for User Records.
A Google user
November 26, 2018
Not sure where the bad reviews are coming from I think it's fantastic. Sure it's a few extra bucks for the additional content but for an avid archer it is well worth it and super convenient on the phone. I had an issue with the database download so I had to uninstall and reinstall. All purchased content was retrievable except the save slots. I had to buy those again but Larry was very helpful and refunded my extra purchase immediately.
2 people found this review helpful
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What's new

Fixed lack of HTTPS support in Android7&8