The latest update was purely a maintenance update to squash a bug that would give a few inaccurate numbers in the mixed air column. I will be working on adding some new functionality in the coming weeks.
Thanks for providing this free app! It works well for me. You get a lot of stars in your crown, good Karma (whatever your beliefs are) for doing this. If more people were like you in the world, I'll bet there would be no wars, hunger, strife, etc. Now, anyone that's reading this, are you a good person too? You CAN make a difference! Make it a difference for the positive then go to heaven!:D