macOS · offline

A field day's photographs, filed by species.

Point PlumageSort at a folder. It identifies the birds and sorts them into folders named for the species — on your own Mac, with no upload, no account and no network connection.

Download for macOS

Free for your first 20 species. No card, no account.
Version 1.0.6 · macOS 14 or later · Apple silicon and Intel

What it actually does

And, as importantly, what it declines to do

3,439 species

1,040 of them recorded in the Indian subcontinent. Tell it where you were shooting and it stops offering you American birds.

It says when it doesn't know

Anything it isn't confident about goes to _Uncertain rather than being guessed at. Measured on 391 photographs of 20 species it has never seen, the strictest of the three settings keeps 89% of them out of your species folders.

Nothing leaves your Mac

Identification runs on Apple's on-device machine learning. There is no server to send photographs to, which is also why it works in the field with no signal.

Bursts count once

Forty frames of the same bird is one encounter, not forty. Your allowance goes on the species you photographed, not the shutter you held down.

Plans

One plan, or buy photographs outright

Try it first: 20 species free, no card and no account. Twenty different birds, however many photographs each takes — because the work is the species you photographed, not the shutter you held down.

Top-ups

For a period that runs out mid-job. They never expire

 
Field Notes
₹500
once
  • 500 photographs
  • Never expire
  • An afternoon that overran
Buy Field Notes
 
Expedition
₹1,200
once
  • 2,000 photographs
  • Never expire
  • A trip's worth, in one go
Buy Expedition

Top-ups need no subscription and never expire — they are there so a job does not halt at 2am, and so you can pay once if a plan is not what you want. A plan is still the better rate, and Birder removes the arithmetic entirely. Inside the app you can also top up by any amount from ₹99.

Photographs
Free trial20 species
Birder, per 2 monthsunlimited2,000
Field Notes500, never expire500 once
Expedition2,000, never expire1,200 once

A licence covers one machine, and you can move it to another whenever you like from inside the app. Photograph counts are approximate because long bursts of one bird are charged once, so heavy burst shooters get considerably more than the number above.

Requirements

macOS 14 or later · Apple silicon or Intel · about 250 MB

PlumageSort is sold and updated directly from this site. It is signed and notarized by Apple, and updates itself.