Butterfly Discover

Butterfly Discover asks what you can see before it tells you what it found.

Most butterfly and moth identification apps hand you a name and no way to check it. Butterfly Discover gives you an answer you can test — because you do the looking first.

NOTICE, GUESS, REVEAL
Photograph a butterfly or a moth. Mark what you can actually see on your own photo: wings, body, markings. Up to three candidates then arrive as A, B and C with their names held back, so the only thing left to go on is the evidence in front of you. You commit to one. Only then does the match appear, together with the marks that support it, the guess you made, and the details to compare next. That is the whole difference: you get a name and the reasons for it, in that order.

1,500 SPECIES OF BUTTERFLIES AND MOTHS, IDENTIFIED ON YOUR PHONE
The offline catalog holds 1,500 species, listed by scientific name. Moths are not an afterthought here — they take up more of the catalog than the butterflies do. Hawk-moths, tiger moths, silk moths, underwings, loopers and carpets sit beside the swallowtails, fritillaries, blues, hairstreaks and skippers. Identification runs on the phone itself: the catalog, the photographs and the matching all ship inside the app, so it works in a meadow with no bars.

Photo matching runs on your device without sending your photo to the developer. No user account with the developer is required. Device backups and files you choose to export or share are handled separately; see the privacy policy.

A WRITTEN FIELD-GUIDE ENTRY FOR EVERY SPECIES
All 1,500 species carry an entry written for them: visible marks, size band, body shape, habitat, photo tips, and notes on the species they are most often confused with. Alongside them sit 1,064 licensed photographs from 343 credited photographers — CC0, CC BY and CC BY-SA only, with the photographer named in the app.

CHECK EACH SUGGESTION
The app suggests possible matches, not a confirmed identification. It may suggest a species even when the photo shows another subject, and some suggestions may have no written guide entry. Compare visible features, try another photo when unsure, and leave the observation unidentified if the evidence does not fit.

IN 45 LANGUAGES
The interface and every field-guide entry are written in 45 languages. Species are listed by scientific name, with a common name where one has been verified.

WHAT ELSE IS IN IT
• Identify — photograph a butterfly or moth, or choose one from your gallery
• Browse — the whole 1,500-species catalog, on the device
• Collection — a private log of what you have found, kept on this phone
• Learn — practice rounds that use the same notice-and-guess flow, including a lookalike drill
• Dark and light themes, following your system setting

Butterfly Discover helps you learn to recognise butterflies and moths. It is an identification aid for learning, and its matches can be wrong. Do not rely on it for decisions about handling wildlife.

Three days of full access are included. After that, a one-time purchase keeps it. On Android, this purchase requirement does not apply while a valid access code is active. A valid code gives you all features for free, with no time limit.