Underfoot
A field guide for young explorers who won't stop turning over rocks.
Point a phone at whatever just scuttled out from under a log. Underfoot identifies it honestly, tells you where to look for more, and pins it to a growing collection worth showing off.
iPhone · First 10 species free · Optional paid Pro
Three steps, no manual required
The whole point is that a ten-year-old can run the show. No accounts to set up, no jargon to learn.
Point
Aim the camera at the bug, spider, or roly-poly you just found. No need to catch it or hold still for long.
Identify
Underfoot suggests an identification and shows its confidence. Compare the result with what you can see; a photo identification can be mistaken.
Collect
Each find becomes an illustrated specimen card, pinned to a corkboard collection that grows with every walk.
Built like a real field guide
Not a quiz app with a bug skin. Underfoot is closer to the dog-eared guidebook that lives in the car.
Honest identification
Real confidence, shown plainly. When it's genuinely unsure, it offers choices instead of pretending to know.
Illustrated specimen cards
Ink-and-watercolor-style artwork gives each species a place in your collection. The illustrations are created with AI.
2,000+ U.S. species
Insects, spiders, and the whole under-a-rock crowd — roly-polies, millipedes, snails, slugs, centipedes.
Where to look
Each entry includes a habitat tip and nearby parks or trails worth checking, so the hunt doesn't stop at the backyard.
Free observation kit
Print an adult guide, insect-order clues and reusable field notes for your next walk. Download the six-page kit — no app or signup required.
Browse the guide offline
The bundled field guide, illustrations and habitat notes are on the device. Photo identification needs an internet connection.
From backyard to specimen card
The identify screen, a finished specimen card, and the corkboard where a summer's worth of finds pile up.
Identify
Specimen card
The board
Quiet by design
Underfoot is a general-audience app that a parent sets up and a kid uses outside. It was built to stay out of the way — for the child and for the family's data.
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No ads. Explore without advertisements. Pro is an optional paid upgrade.
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No tracking. No advertising or behavioral analytics SDKs, no cross-app tracking.
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No child accounts. A parent operates the app; a child profile is just a nickname and a chosen icon.
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Parent-operated, always. One account, one adult in charge, deletable in a single action.