Top Reference apps in United States 🇺🇸

iOSMay 11, 2026· Snapshot dated View all snapshotsMethodology

As of May 11, 2026, Merlin Bird ID by Cornell Lab is the #1 Reference app in United States on iOS.

iOSAndroid
#App / PublisherIntel
  1. 1
  2. 21
  3. 31
  4. 4
  5. 5
  6. 6
  7. 71
  8. 82
  9. 92
  10. 101
  11. 114
  12. 121
  13. 131
  14. 147
  15. 151
  16. 163
  17. 171
  18. 186
  19. 192
  20. 2011
  21. 212
  22. 221
  23. 234
  24. 246
  25. 259
  26. 264
  27. 277
  28. 282
  29. 294
  30. 302
  31. 315
  32. 324
  33. 334
  34. 348
  35. 3510
  36. 367
  37. 372
  38. 381
  39. 393
  40. 402
  41. 411
  42. 4257
  43. 431
  44. 441
  45. 454
  46. 463
  47. 474
  48. 481
  49. 49NEW
  50. 505

What changed

Movement between the previous day and May 11, 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 11, 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