Herbarium is an Android app designed for nature enthusiasts who want to learn more about the plants around them. Developed by Paolo Gianfelici, this free app falls under the Education & Reference category with a focus on books.

The app's main feature is its ability to recognize spontaneous herbs based on their flowers' color, blooming period, and altitude. It also allows users to read offline or online descriptions of the plant. Additionally, users can save their sightings on "My Herbs" with geolocalization of the place, the plant photo, and notes of the sighting.

One of the app's best features is that it functions offline, making it ideal for use even in remote places with no internet connection. The entire app is in English, making it accessible to a wider audience. Overall, Herbarium is an excellent app for nature lovers who want to learn more about the plants around them and document their findings.