$30 Wasted

This app no longer works on my phone. They have updated it to require a higher OS than is available for my iPhone. I bought this app less than a year ago. If this was done to a free app, it would be different, but for one that cost this much, they should at least have made it backwards compatible. You are better off buying a pocket geology dictionary for $5. Dont risk your money. Who knows how long this will last.

Doc True about Glossary of Geology