Merlin Bird ID by Cornell Lab app icon

Merlin Bird ID by Cornell Lab

by Cornell Lab of Ornithology

EN / ES / FRTrending upSentiment-6 ptsvs last month
Appeye score 89 out of 100, from 3,016 reviews (high confidence)

3,016 reviews analysed · 15 Jun 2023 – 11 Sep 2026 · scored 14 Sep 2026

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Based on 3,016 reviews from 15 Jun 2023 - 11 Sept 2026.

Overview

Appeye score
89/100high confidence
Category rank
#225 of 1,745Books & Reference
Reviews analysed
3KScored reviews across both stores.
Sentiment trend
Trending upIts trend signals are moving in a positive direction.
App Store
4.9

110.8K ratings

Review sentiment

83
App nameMerlin Bird ID by Cornell Lab
SellerCornell University
GenreReference
Version4.1
Content rating4+
Requires iOS18.0
Size311 MB
Released11 Dec 2013
Current version17 Aug 2026
View on App Store
Play Store
4.9

180.4K ratings · 10,000,000+ installs

Review sentiment

78

Star distribution

1★ 0.5% · 2★ 0.7% · 3★ 3% · 4★ 95.9% · 5★ 0%
App nameMerlin Bird ID by Cornell Lab
DeveloperCornell Lab of Ornithology
GenreBooks & Reference
Version4.1
Content ratingEveryone
ReleasedJun 26, 2014
Reviews on store30.7K
App description

What's that bird? Ask Merlin—the world’s leading app for birds. Just like magic, Merlin Bird ID will help you solve the mystery. Merlin helps you identify birds you see and hear. Merlin is unlike any other bird app—it's powered by eBird, the world’s largest database of bird sightings, sounds, and photos. Merlin offers four fun ways to identify birds. Answer a few simple questions, upload a photo, record a singing bird, or explore birds in a region. Whether you’re curious about a bird you’ve seen once or you’re hoping to identify every bird you can find, the answers are waiting for you with this free app from the renowned Cornell Lab of Ornithology. WHY YOU’LL LOVE MERLIN • Expert ID tips, range maps, photos, and sounds help you learn about the birds you spot and build birding skills. • Discover a new bird species each day with your own personalized Bird of the Day • Get customized lists of birds you can find where you live or travel - anywhere in the world! • Keep track of your sightings—build your personal list of the birds you find MACHINE LEARNING MAGIC • Powered by Visipedia, Merlin Sound ID and Photo ID uses machine learning to identify birds in photos and sounds. Merlin learns to recognize bird species based on training sets of millions of photos and sounds collected by birders at eBird.org, archived in the Macaulay Library at the Cornell Lab of Ornithology. • Merlin delivers the most accurate results thanks to experienced birders, who curate and annotate sightings, photos, and sounds, who are the true magic behind Merlin. AMAZING CONTENT • Merlin has bird photos, songs, and calls, and identification help for anywhere in the world, including Mexico, Costa Rica, South America, Europe, Africa, the Middle East, India, Australia, Korea, Japan, China, and more. The Cornell Lab of Ornithology’s mission is to interpret and conserve the Earth’s biological diversity through research, education, and citizen science focused on birds and nature. We are able to offe

Score by store

Appeye's overall score out of 100, calculated separately for each store.

App Store
90/100

from 1,481 reviews (high confidence)

Play Store
88/100

from 1,535 reviews (high confidence)

Gap between stores: 2 points

Sentiment over time

Not enough monthly history yet to show a trend.

Version history sentiment

Per-release positive review share for each app version that has at least 3 analysed reviews, oldest first — so you can see whether the last real release helped or hurt separately from the calendar-month trend.

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Version history

  • App Store4.04.86★ · 109.3K ratings2 Aug 2026

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