PocketMacros is an educational app designed to assist users in identifying and learning about aquatic macroinvertebrates. Developed by Marti Louw, this app serves as a companion to Macroinvertebrates.org: The Atlas of Common Freshwater Macroinvertebrates of Eastern North America.

The app features a comprehensive field guide section that provides detailed information on various species of macroinvertebrates. Users can access an interactive identification key, which helps them identify macroinvertebrates based on specific characteristics. Additionally, the app offers flashcard practice modes to reinforce learning and improve identification skills.

PocketMacros aims to support watershed stewardship, water quality biomonitoring, environmental education, and recreational fishing. It is funded by the National Science Foundation and is a valuable resource for educators, researchers, and nature enthusiasts.

The app can be used offline, without requiring any account or internet connection. It prioritizes user privacy by not collecting identifiable user data. However, users can choose to opt-in for anonymized user analytics data, which is used for research purposes and to enhance app features. The data collection feature is disabled by default and can be easily managed within the app's Settings section.

For additional teaching and learning resources, users can visit Macroinvertebrates.org.