Unpolished and hard to use. The parameters are poorly explained and took an hour of retroactive trial and error after actually hanging a hammock to figure out what numbers to plug in. Turns out you pretty much do need a ridgeline for for this to be accurate at all. But it is still more correct than the free alternative, so whatever.
Serious crapware Had to reboot the phone twice to get rid of "Application restart required" message which shows up when starting the app and doesn't even let the phone respond to anything including the "home" button. Stay away!
If you love hammocks, buy this! Great app from a guy who knows everything about setting up a hammock! Very polished looking app in the style of illustrations from the ultimate hang book. The clinometer is a bit jumpy while still being accurate, maybe the sensitivity or sample rate could be softened a bit? Also, not a huge fan of the haptic feedback that can't be turned off. However, these are both minor issues for an otherwise perfect app!
Almost Worth The Price This calculator comes up with the necessary numbers and provides the numbers in an easy to understand graphic. That said, there are some things that keep this from being a great app (and truly worth the price tag): currently you have leave the main calculator for a separate settings window to put in your numbers. This would be much more efficient and intuitive if you could change the numbers on the main calculator graphic. This is made worse by the current interface that will ask you for the numbers, give you the option to go to the next value, but doesn't tell you what value you're inputting. So unless you've memorized the order, you have to keep backing out and going back in for each value. It also doesn't store any of your values after closing the program, so you have to remember the length of your hammock, preferred hang angle etc. some other way (and use that terrible input system every time). The clinometer is fidgety, but is good enough for the task.
Eternal Loop I hope they will provide a fix soon for free. Beware and don't download or buy until they fix the eternal loop
Restart needed ........ It hangs the entire phone in some kind loop. and the only way to be able to use the phone gain is to restart the entire phone. The app is not posible to use at all