Works on: Android
What it is: Geology notebook
What it does: This ad-supported app is designed for serious and casual geologists alike. Geology Sample Collector lets you record virtually everything about your rocky finds, offering support for voice recordings, videos, photos, temperature readings, time stamps, notes, and GPS data.
Not good enough? The app also includes a digital theodolite to measure height, distance, angles, and planes. When you’ve finished your project, the app uploads and backs up all your data to MajorForms.com, where you can easily display it on a Google Map. Mineral buffs won’t find much to hate here.