Rock Catalog

RockCatalog is a private field notebook for anyone who picks up stones on the trail, at the beach or in old quarries. Log every specimen with a species name, date, location and free-form notes, then browse your growing catalog whenever you want. The app ships with a curated reference library of forty common rocks and minerals: quartz, granite, obsidian, basalt, marble, slate, gneiss, pyrite, hematite, azurite, calcite, feldspar, mica, gypsum, halite, amethyst, citrine, jasper, agate, opal, tourmaline, malachite, sulfur, fluorite, garnet, olivine, magnetite, bauxite, limestone, sandstone, shale, dolomite, chert, pumice, tuff, schist, quartzite, chalk, coal and serpentinite. Each entry includes the category (igneous, sedimentary, metamorphous, mineral) and a short field description so you can identify what you have picked up. Features - Add a new find with a bottom-sheet form and species picker - Long-press a find to remove it with a confirmation prompt - Species Library with realtime search and detail sheet - Unified search across your finds and the reference library - Fully offline: everything stays on your device - Distraction free interface with an earthy ochre and rust palette - No accounts, no tracking, no notifications RockCatalog is designed for hikers, geology students, rockhounds and anyone who enjoys collecting interesting stones. Whether you are cataloguing a lifetime of specimens on the shelf or logging fresh finds during a weekend trip, the app gets out of the way and lets you focus on the rocks.