Short answer: 2 out of 5 stars.

This is obviously somebodiessomebody’s work of love. Like me, they are more interested in the data than the user interface.

This leads to a user interface that is barely useable.

There are times when you press on a sentence which acts like a button. These are often small with gray text. In other locations, the same text is on a button.

There is an option to “save” all over the place, but what are you saving? How do you get it back?

In the 4DOF calculator, if you select what you think is a cartridge, it will set the ballistics of the bullet, but not velocity.

The default dashboard has a couple of widgets to let you slowly set the range to target and wind conditions. If you want a table instead, you can click at random until you click on the clipboard/grid in the lower-right corner.

This gives you an option to change the interval between data rows and the total distance you want calculated.

If you like the numbers, press “set”. Do not press the “cancel” button. If you press cancel, it will take you back one screen. You need to click set, which will give you the table you are interested in.

This table is the 2 stars above. It uses either the G1 or G7 drag curves, it uses all the variables you provide. There is time of flight, drop in inches, MOA offset and everything else you could want.

It has a “save” feature. I don’t know where it saves the data nor how to access it, nor how to print it.

Even if the features I’m looking for exist, this app is too clunky to use.

I’ll go looking for an online replacement soon.

I’d actually prefer to get gnuplot doing this for me. I have the G1 and G7 curves, it is just a matter of entering the correct formulas.