Top Books & Reference apps in United States 🇺🇸

AndroidMay 20, 2026· Snapshot dated View all snapshotsMethodology

As of May 20, 2026, Merlin Bird ID by Cornell Lab is the #1 Books & Reference app in United States on Android.

AndroidiOS
#App / PublisherIntel
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  41. 418
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  43. 437
  44. 448
  45. 453
  46. 461
  47. 476
  48. 4827
  49. 492
  50. 509

What changed

Movement between the previous day and May 20, 2026.

Methodology

Rankings are pulled daily from the Android store charts for United States. We snapshot the top entries each day and compute day-over-day change relative to the prior snapshot. See our full methodology for data sources, refresh cadences, and quality filters.

Frequently asked questions

What is the #1 Books & Reference app in United States on Android?
As of May 20, 2026, Merlin Bird ID by Cornell Lab is the #1 Books & Reference app in United States on Android, based on the public Android chart rankings Marlvel tracks daily.
How often are these rankings updated?
Marlvel snapshots the Android charts for United States every day and computes day-over-day movement. The "Current" page always reflects the latest snapshot; dated archive pages preserve each day's top 50.
Where does Marlvel's ranking data come from?
Rankings are pulled from the public Android store charts for United States. See our methodology for data sources, refresh cadence, and the quality filters applied before a ranking is indexed.

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Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by the apps, publishers, or platforms referenced. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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