Lupa: Rock & Mineral ID

Point your camera at a rock, mineral, crystal, or fossil. Lupa turns the photo into a short, honest list of candidates, then a few field checks narrow it down. A real answer when there's one. "No good match" when that's the truth. Some specimens need a warning before anything else. Asbestos-like amphiboles, uranium minerals, arsenic ores, mercury ores, and lead minerals look ordinary next to harmless neighbors. Lupa flags anything from that group and skips the field checks that call for touching, scratching, or handling it. That's a warning, not a lab result: a flagged find is worth real caution and a second opinion from someone qualified before you handle it further. HOW IT WORKS - Snap a photo of a rock, mineral, crystal, or fossil - Get a ranked shortlist of candidates with the reasoning behind each one, not a single confident label - Run a field check: hardness (a scratch), streak, cleavage, lustre, a drop of vinegar, a magnet, the same tests a geologist reaches for - Save the find with a photo, a note, and a location BUILT LIKE A FIELD GUIDE, NOT A TOY Every photo is checked against a curated reference of 268 species: quartz and jasper, agate and geodes, pyrite and obsidian, ammonites and trilobites among the fossils. A MAP OF EVERYWHERE YOU'VE COLLECTED Every find sits on a personal map, alongside a geology layer showing the rock formation, and its age, under your feet. Species, finds, and places, tallied automatically, plus a shareable yearly retrospective of your best finds. PRIVATE BY DEFAULT Your collection lives on your phone, not an account. Sharing a find is a choice you make per find, and location is left out by default: collecting spots are worth keeping to yourself. Free to start: 5 identifications every month, no account required. Lupa Pro removes the monthly cap and unlocks the geology layer, full data export, and a 3-day free trial. Whether you're rockhounding on a weekend trip, a student learning mineral properties in the field, or someone who picked up a strange rock on a hike and wants a real answer, Lupa is built to be an honest tool, not a guess dressed up as certainty.