
Underfoot: Bug Field Guide
A field guide for the curious
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Free
In-App Purchases
Rating summary
About
Underfoot is a field guide for anyone who can't walk past a bug without stopping to look.
Photograph an insect, spider, or under-a-rock critter, get an AI identification suggestion, and add an illustrated specimen card to your collection.
Try 5 photo identifications free in total, not per day. After those, more photo IDs require an Underfoot Pro subscription. No subscription starts automatically. Failed requests and photos with no identifiable bug do not use a free ID. Saving and browsing finds and the field guide are always free.
HOW IT WORKS
• Identify and compare. Check the suggestion against real reference photos, or choose a different species from the guide. AI can make mistakes.
• Explore over 2,000 species. Browse insects, spiders, roly-polies, millipedes, snails, and other small creatures, with AI-generated illustrations in an ink-and-watercolor style.
• Keep your own photos. See your find beside a reference image, enlarge either photo, and explore available life-stage images.
• Collect wild finds. Save a species outside the bundled guide with an illustration generated for its card.
• Know where to look. Read habitat tips, see seasonal suggestions, and explore nearby parks and trails.
• Try something outside. Optional field activities and five observation walks help you slow down and notice more.
QUIET BY DESIGN
No public profiles, messaging, advertising SDKs, or cross-app tracking. Your nickname, collection photos, and field-activity progress stay on your device. Your collection is available offline. A parent should supervise a child's use.
Photo identification requires your consent and an internet connection. Your selected photo goes through Underfoot's Firebase server to Google Gemini without your nickname or location. Anonymous identifiers, request counts, and technical diagnostics support the service; Google may retain requests for safety checks. Location is optional. See our privacy policy for details and deletion options.
FREE & PRO
Start with 5 free photo IDs. Pro provides more photo identifications with a monthly or yearly auto-renewable subscription. Prices and billing intervals are shown before purchase. Paid subscriptions renew automatically until canceled in your Apple account settings. Restore purchase is available on the Pro screen. Saving and browsing finds never requires Pro.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://underfoot.web.app/privacy
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What's New in Underfoot
1.2
October 21, 2026
Try 5 photo IDs free in total, with your remaining allowance shown upfront. More photo identifications require Pro after the five free IDs. Saving and browsing finds are now always free, with no species limit. Failed requests and photos with no bug do not use an ID. No subscription starts automatically. Purchase and restore access have also been improved.
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Subscriptions & In-App Purchases
Underfoot Pro
Underfoot Po Plan
$2.991 Month




