The idea for this app is a general purpose tool for gen-chem students and occasional tool for the practising chemist who can't remember the formula's. Use the force (sourceforge) and you will have thousands of smart helpers. Shareware may work if you add teaching examples. But I can't think of many people who would buy this as a commercial app. Go the sourceforge route, and you may create something really cool and somthing to be proud of.

my two cents

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