I have not checked all the information about the amino acids but I just saw under glutamine the structure of GLUTAMIC ACID. I found this to be highly unreliable and I consider it to be a waste of money.

^^^ The layout here is more spacious than chem touch's but this doesn't include nucleic acids and detail on all elements of the periodic table. Had I realized the chem touch already provided the amino acid info, I never would have purchased this $3 app. Safe to say it is no longer on my touch.

I like this program, and does everything it claims to do. If you need to learn the structures, symbols, and properties of the amino acids, this is a useful app. Since my original review, they have added additional information including codons, and a simple codon search which allows for the translation of a nucleic acid sequence into its corresponding amino acids. I hope the developer continues to improve it with updates, especially useful would be the ability to view all the AAs at once in their various categories without scrolling.This is a definite 5-star reference now, and is a great bargain. Anyone taking genetics, biochem, molecular bio, or in need of quick access to amino acid data and structures should try this app out.

I'm enjoying the updated info in the new version and the included wiki link for each of the aminos. Nice update, 5-star app for sure. --------------------------------------------------Original review:A great little refrence tool that does what it says it will do and looks and runs well to boot. For $0.99 you can't go wrong. In future updates it might be nice if they included a bit of info on the roles of the different aminos and perhaps a brief explaination of the chemical bonds and how they work, but I certainly won't me complaining if they don't as that could easily become a differet app altogether.