PersonalGeo Android App
PersonalGeo is primarily intended as a geo-scientific  data-gathering and input tool. It is aimed at assisting with the logging of diamond drill-core or costeans/trenches targeted in an exploration environment.

PersonalGeo is particularly suitable for geologists working for small to medium sized exploration or resources companies that do not already have a commercial in-house Geological Information Management System (GIMS).
PersonalGeo is a great way of carrying your drill hole logs in your smartphone, in your pocket. If you are on-site and need to quickly provide a drill hole summary, or the details of an individual interval to clients, a supervisor, or co-workers, a few taps will get you there! PersonalGeo features an internal relational database to store your geo-scientific information, and allows the data to be exported and emailed as various text files and report attachments.

Get it on Google Play