Top Reference apps in United States 🇺🇸

iOSMay 27, 2026· Snapshot dated View all snapshotsMethodology

As of May 27, 2026, Merlin Bird ID by Cornell Lab is the #1 Reference app in United States on iOS.

iOSAndroid
#App / PublisherIntel
  1. 1
  2. 2
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  5. 5
  6. 6
  7. 71
  8. 81
  9. 926
  10. 101
  11. 111
  12. 12
  13. 13NEW
  14. 141
  15. 15
  16. 162
  17. 172
  18. 187
  19. 191
  20. 201
  21. 214
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  26. 26
  27. 2712
  28. 2810
  29. 295
  30. 303
  31. 31
  32. 329
  33. 331
  34. 346
  35. 352
  36. 36
  37. 373
  38. 389
  39. 3920
  40. 4029
  41. 41NEW
  42. 424
  43. 434
  44. 44NEW
  45. 458
  46. 463
  47. 477
  48. 487
  49. 497
  50. 504

What changed

Movement between the previous day and May 27, 2026.

Methodology

Rankings are pulled daily from the iOS 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 Reference app in United States on iOS?
As of May 27, 2026, Merlin Bird ID by Cornell Lab is the #1 Reference app in United States on iOS, based on the public iOS chart rankings Marlvel tracks daily.
How often are these rankings updated?
Marlvel snapshots the iOS 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 iOS store charts for United States. See our methodology for data sources, refresh cadence, and the quality filters applied before a ranking is indexed.

Related rankings

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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