Top Reference apps in United States 🇺🇸

iOSMay 10, 2026· Snapshot dated View all snapshotsMethodology

As of May 10, 2026, Merlin Bird ID by Cornell Lab is the #1 Reference app in United States on iOS.

iOSAndroid
#App / PublisherIntel
  1. 11
  2. 21
  3. 3
  4. 4
  5. 5
  6. 6
  7. 71
  8. 81
  9. 92
  10. 101
  11. 111
  12. 122
  13. 131
  14. 142
  15. 159
  16. 164
  17. 174
  18. 18
  19. 1912
  20. 2015
  21. 21
  22. 227
  23. 234
  24. 248
  25. 258
  26. 264
  27. 272
  28. 282
  29. 296
  30. 30
  31. 313
  32. 325
  33. 334
  34. 342
  35. 357
  36. 363
  37. 37
  38. 383
  39. 395
  40. 402
  41. 412
  42. 4234
  43. 434
  44. 441
  45. 451
  46. 461
  47. 4712
  48. 4848
  49. 499
  50. 507

What changed

Movement between the previous day and May 10, 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 10, 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.

Data licensed under CC-BY-NC 4.0