Among the reviews analyzed, Merlin Bird ID by Cornell Lab is received recurring praise in the analyzed sample for its exceptional Sound ID feature, which multiple sampled reviews found accurate and transformative for learning bird songs. Positive feedback also highlighted the comprehensive bird database and multiple identification methods. However, a recurring theme was frustration with login and account authentication issues, especially after updates, which led to lost life lists and recordings. Other common complaints included degraded sound ID performance, limited offline functionality, and difficulty adding known birds to life lists. While many reviews praised the app's educational value and free access, these recurring technical issues significantly impacted user experience, suggesting the app may fit casual birders with reliable internet and patience for occasional glitches.
What users like
Sound ID accuracy and real-time multi-bird identification Many sampled reviews praised the sound ID feature for accurately identifying multiple birds simultaneously in real time, often highlighting its ability to recognize faint or distant calls and its value in learning bird songs.
Comprehensive bird database and educational content Users frequently mentioned the app's extensive database with photos, sounds, migration maps, and life history details, which they found highly educational and useful for learning about local and traveling birds.
Multiple identification methods (sound, photo, step-by-step) The ability to identify birds by sound, photo, or step-by-step description was consistently valued, accommodating different situations and user preferences.
Free and ad-free with data contribution to science Several users appreciated that the app is free with no ads, and they felt good about contributing sightings to Cornell Lab's research, which added to its appeal.
Common concerns
Login and account authentication problems Recurring reports of being randomly logged out, unable to log back in, losing access to life lists and recordings, with little or no response from support, especially after certain updates.
Sound ID and overall detection performance degraded after updates Multiple sampled reviews reported that the app used to work well but after updates it stopped hearing birds or frequently failed to identify clear calls, even when birds were close and loud.
Offline functionality and location dependency issues Users complained that the app required location or internet connection for core features, making it unreliable in remote areas where birding often occurs, even with downloaded bird packs.
Loss of recordings and life list data Several users reported losing recordings or entire life lists due to app crashes, uninstalls, or the change from auto-save to manual save, causing significant frustration.
Based on 500 Google Play reviews · Updated Aug 30, 2026
Over the last 60 days, PixelTrack observed changes in estimated installs, rating, rating count and review count. The table compares the earliest recorded changed value with the latest observation.
Metric
Earlier value
Latest value
Change
Latest change
Estimated installs
12,298,421
12,591,796
+293,375
Oct 4, 2026
Rating
4.9
4.86
-0.04
Oct 4, 2026
Rating count
179,582
182,042
+2,460
Oct 4, 2026
Review count
30,635
30,936
+301
Oct 4, 2026
Merlin Bird ID by Cornell Lab Changelog
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