I've been using Beer Alchemy for 2+ years and it has been INVALUABLE to me over the course of 100+ all-grain batches including a gold medal winning American Strong Ale at this year's LA County Fair. Along the way, if I've ever had questions related to features in the app, customer service has always been very quick to respond.
I solely use Beer Alchemy on my iPhone and iPad and since purchasing Beer Alchemy 2 ($4.99 on iOS), I've really appreciated the ability to sync between the two. I might be mistaken but with Beer Alchemy, I had to sync my mobile to my desktop and then my desktop to my iPad. Now I can go straight from iPhone to iPad and vice versa. (I prefer to design my recipes on the iPad and then use iPhone on brewday).
Though there are many new features that I really like (including an updated UI), my top 3 favorite additions are:
1. Ability to record more than 1 type of yeast in a recipe/batch.
2. Ability to take a picture and save it within the recipe/batch.
3. Ability to utilize a BIAB (Brew In A Bag) with a no-sparge profile.
So, with that being said, I raise my glass to you, creator of Beer Alchemy 2!