Grains vs Easy3DScore

Build a better hunting arrow. Grains calculates your total arrow weight, FOC, arrow speed, kinetic energy and momentum in one simple archery calculator. Four calculators, no account, no ads, nothing to buy. Numbers carry from one tab to the next, so you enter your arrow build once. ARROW WEIGHT When you build an arrow, you're working with many small components of different weights. Enter your shaft length and grains per inch (GPI), point or broadhead, insert, nock, vanes or fletching, wrap and any additional weight, and Grains adds up your total arrow weight in grains. Change one component and see right away how it affects the whole build. FOC (FRONT OF CENTER) Front of center is an important factor in building an accurate hunting arrow. Enter your arrow length and balance point to get your FOC percentage. Grains also explains how to get an accurate measurement and what an ideal setup looks like (most hunters aim for 10% to 15%). ARROW SPEED A slow arrow gives game more time to "jump the string." Enter your bow's IBO speed, draw length, draw weight and any weight on the string, and Grains estimates your arrow speed in fps using the standard IBO rules. It also shows your grains per pound and warns you when your arrow drops below 5, the minimum most bow makers require to keep your warranty. KINETIC ENERGY AND MOMENTUM A fast arrow with good FOC is only good if it carries enough energy. Grains calculates kinetic energy in ft-lbs from your arrow weight and speed, shows the game your setup is suited for, from small game to deer, elk and black bear to moose and grizzly, and shows momentum, the number many bowhunters use to judge penetration. METRIC OR IMPERIAL Results follow your region's units, or pick your own in Settings: speed in m/s, energy in joules, momentum in kg·m/s and total weight in grams alongside grains. Inputs stay in grains, inches and pounds, just like your spec sheets. QUICK TO USE Jump between fields with the arrows at the top of the screen, tap any label to edit it, and swipe down to put the keypad away. Speed is an estimate based on IBO specs. For an exact number, chronograph your bow.

Scoring app for 3D archery, target archery and field archery. Use your device as scoresheet. Comprehensive statistics help to analyze your scores. You can save results for later review, share results with others, or import shared results. App comes with a set of 3D archery scoring systems ( IFAA, IBO, ASA, NFAS ) and support for some WA, FITA, and NFAA target faces. You are not limited to the built-in scoring systems. You can modify built-in scoring systems as needed, and easily create new scoring systems in the app. Scoring systems can be shared and imported. Create courses in the app and use them for your rounds. Course name, address and target information like description, distance, and notes can be easily captured. Target distance, if available, is used to create distance based statistics. Courses can be shared and imported. FAQs are available within the app. App usage requires, except for in-app purchases, no internet connection. The free version has some limitations. Easy3DScore Pro offers the full functionality and is available as In-app purchase.