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  • Field Notebook: Bugs & Nature screenshot 1
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About Field Notebook: Bugs & Nature

One notebook for bugs, butterflies and moths.
Switch between two volumes, Insects and Butterflies & Moths, and look up names from your own photos. Everything runs on your device, so photos are never sent anywhere and it works without a connection.

PICK A VOLUME, THEN SHOOT
- Choose a volume on the shelf; the guide, photo ID and quiz follow it
- The AI suggests candidate names from a camera or album photo (only a guide, never a verdict)
- Tap the one you think is right to save it as a record

TWO VOLUMES
- Insects: 230 species, from beetles and dragonflies to stink bugs, bees and cicadas
- Butterflies & Moths: 76 species, with appearance tips and family and genus notes written for each one

HOW TO BUY
- Browsing the guide cards and keeping records are free. Photo ID is limited to 3 a day (unlimited for the first 7 days)
- One purchase of Insects unlocks unlimited photo ID for both Insects and Butterflies & Moths
- The one-time purchase also opens unlimited quiz, a map of your finds, CSV export of your records, and photo tips and observation hints
- The all-volumes pack opens every land volume, including ones added later
- Not a subscription. On a new device, use Restore purchase to carry your purchase over

ABOUT THE GUIDE CARDS
- The Insects volume is sorted into four places: in and around the house, garden and flower beds, parks and fields, and camping, mountains and rivers
- Each species has its size, season, where to meet it, how to tell it apart, life habits, a fun fact and its source
- The guide can be read without taking any photo. Species you have not met yet are marked as not met, and your records grow from the species you find with photo ID
- Search the guide by name or scientific name

RECORDS AND PLAY
- After a result, choose a candidate and it is kept on your device as an observation record
- If you cannot tell the name, you can still keep a record as "name not decided"
- Today's Quiz lets you guess the name from clues and remember it. It works in both the Insects and the Butterflies & Moths volumes

HOW TO USE
1. On Home, choose a volume (Insects or Butterflies & Moths)
2. Use the camera or pick from your album to prepare a photo of the bug
3. From the candidate names the AI shows, tap the one you think is right
4. On the guide card, check the tips for telling it apart and its habits. Your records build up on your device
The volume affects the guide, photo ID and quiz. The number of species and the clues for telling them apart change with each volume.

PRIVACY
- Photos and records are stored only on this device. Nothing is sent outside
- No account is needed and there are no ads
- Photo ID and the guide work without a connection

HONEST NOTES
- AI candidates are a guide from the photo. They can be wrong and do not guarantee an identification
- Living things outside the included species cannot be found in the guide, and photos of them may give off-target candidates
- The guide covers not only insects but also familiar "bugs" such as spiders and woodlice
- When a bug that may sting or cause a rash appears among the candidates, a caution card is shown instead of the normal candidate display. Do not use the app to judge whether a bug is dangerous

SAFETY
Avoid touching unfamiliar insects with bare hands. AI results and guide contents are estimates; do not use them to judge whether an insect is dangerous.

Developed by SAKURA PRODUCTS

What’s new

Version 2.0.3 · Updated October 27, 2026

Updated the app icon to match the store listing.

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