I gave the previous version the six-star review below. Ill leave it for reference.
Everything I wrote is still true and it keeps getting better. The reviews of the early versions that say it needs pathogens should be updated. Or you should just ignore them. Its the king of the sous vide apps.
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Does everything I want in a sous vide app. Computes time and temperature and pasteurization for all kinds of foods of all different shapes and sizes. Change it by a millimeter or a degree and it recalculates in a second or two. It shows you what is going to happen all through the cooking process on a little graph.
Just enter your food. Look at the time and temperature it says, and go. Change the temperature if you want, but the suggestions it makes are usually pretty good. Ive done beef and chicken and salmon and the suggestions were right on. Also, be sure you set it for your machine. You do that once and then forget about it. It gives warnings if you try to do something crazy like six hours in the danger zone without pasteurizing. There is some advanced math and physics greek letter stuff at the bottom that the nerds probably like. Its beyond me but its easy to ignore. It still tells you exactly how to cook sous vide. Im glad it does, because I could never do that math myself!
The sixth star is for listening to users. They are on egullet and when people ask for new features they add them. Usually its done in a week. Things like fahrenheit degrees for the US and pasteurization time. There are three or four more I cant think of right now. Ive never seen another app do that. They usually just ignore the bad reviews and do what they want.
cooke77cooks about SousVide Dash, v2.1