Underfoot: Bug Field Guide
Jason Brannon Education iPhoneiPadiPod touch
Underfoot: Bug Field Guide is a free Education app for iPhone and iPad by Jason Brannon. Requires iOS 17.0. Updated October 21, 2026.
- Price
- Free
- on the App Store
- Size
- 102 MB
- Age 4+
- Updated
- Oct 21
- 2026 · v1.2
Screenshots
About Underfoot: Bug Field Guide
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
What’s new
Version 1.2 · Updated 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.
App privacy
The developer, Jason Brannon, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
- Identifiers: User ID, Device ID
Used for: Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Diagnostics: Other Diagnostic Data
- User Content: Photos or Videos
Used for: Analytics, App Functionality
Alternatives to Underfoot: Bug Field Guide
Looking for apps like Underfoot: Bug Field Guide? Here are 6 similar apps on the App Store. The highest rated is Wanderoo: Wildlife Journal (5.0/5), and 5 of the 6 are free to download.
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ANATOMY 3D Pro
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Exsiccatae
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Wanderoo: Wildlife Journal
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Field Guide: Micro Lessons
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Bird List: Birding Journal
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Underfoot: Bug Field Guide | – | Free | October 21, 2026 | |
| ANATOMY 3D Pro | – | 2.99 USD | Sep 25, 2026 | Compare |
| Exsiccatae | – | Free | Jul 22, 2026 | Compare |
| Wanderoo: Wildlife Journal | 5.0 / 5 (3) | Free | Sep 21, 2026 | Compare |
| Field Guide: Micro Lessons | – | Free | Aug 26, 2026 | Compare |
| Spotted! NatureLens | – | Free | May 11, 2026 | Compare |
| Bird List: Birding Journal | – | Free | Oct 15, 2026 | Compare |