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Which apps work on the iPhone Duo

7,251 apps, checked against Apple's App Store data every day. Hand tests on a real Duo, pose by pose, come next.

Poses

2,069 apps · Letterboxed

  1. STABLEizeThe STABLE ProgramMedicalLetterboxed
  2. Sail BuddyTim HerzogNavigationLetterboxed
  3. Steam ChatValveSocial NetworkingLetterboxed
  4. Vishnu SahasranamamDatta Yoga Center, USAMusicLetterboxed
  5. iStitches FourBedecked & Beadazzled LLCLifestyleLetterboxed
  6. 外貨で記録できる家計簿Tomohiro SasakiFinanceLetterboxed
  7. Green Eggs and HamOceanhouse MediaBookLetterboxed
  8. Maryland Roads TrafficCoderun Technologies LtdTravelLetterboxed
  9. ProjectionistNeodarqueBusinessLetterboxed
  10. Wrecks & RelicsiksmodeNavigationLetterboxed
  11. ADK 46er NowOne Bad AntTravelLetterboxed
  12. Database Manager for MS Access强 李BusinessLetterboxed
  13. Interlinear BibleMartin LochBookLetterboxed
  14. RegEx+圣罡 汤Developer ToolsLetterboxed
  15. Thermo Watch for Nest & EcobeeMarko RadakovicLifestyleLetterboxed
  16. Video Delay Instant Replay Promichal bojanowiczSportsLetterboxed
  17. iTest.Hugh JeffreysUtilitiesLetterboxed
  18. AudiobooksDigital Press PublishingBookLetterboxed
  19. Casino Calculator appBill HarnedFinanceLetterboxed
  20. Pocket Luach DeluxeHaim TebekaTravelLetterboxed
  21. QuickMap WorldAl GROSSNavigationLetterboxed
  22. Random GateKurt BagbySportsLetterboxed
  23. Skeletal Anatomy 3DReal BodyworkMedicalLetterboxed
  24. SleepFanUltra Software Solutions, LLCHealth & FitnessLetterboxed
  25. Sound Proof Puppy TrainingAmy SmithLifestyleLetterboxed
  26. ComicShareyoshitaka hanedaBookLetterboxed
  27. MayLikeWallpaper道杰 林UtilitiesLetterboxed
  28. Military Calc ProHugo AndradaFinanceLetterboxed
  29. COLREGOleksandr KuzmychovNavigationLetterboxed
  30. Catholic New American Bible REgreg fairbrotherReferenceLetterboxed

Automatic check, daily · updated

As of Nov 11, 2026, 25 of the top 100 free iPhone apps have Apple's iPhone Duo badge. The status of every app here comes from Apple's App Store data, read again every day. How an app behaves in laptop, book or tent mode takes a hand test on a real Duo; none has been tested yet. How we test