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Which apps work on the iPhone Duo

6,561 apps, checked against Apple's App Store data every day. Hand tests on a real Duo, pose by pose, come next.

Poses

1,685 apps · Letterboxed

  1. AnatomyMappBooks of DiscoveryMedicalLetterboxed
  2. Bronx ZooChalkLink, LLCNavigationLetterboxed
  3. California Firearms TestAlphaSquare Technologies Inc.EducationLetterboxed
  4. Equine Anatomy Learning AidEqui-Ink Publications, LLCBookLetterboxed
  5. Flux Feed for MinifluxSayan GoswamiMagazines & NewspapersLetterboxed
  6. JotNot Scanner App ProMobiTech 3000 LLCBusinessLetterboxed
  7. Meme MakerRocket Splash GamesShoppingLetterboxed
  8. Papa's Paleteria To Go!Flipline StudiosGamesLetterboxed
  9. Royal CookingMatryoshka Games (CY) LTDGamesLetterboxed
  10. SnowtamBrendan WholihanWeatherLetterboxed
  11. TREKNSTE, LLCGraphics & DesignLetterboxed
  12. Tarbo PDF CreatorMINER (HK) CO., LIMITEDReferenceLetterboxed
  13. The Work AppByron Katie International, IncHealth & FitnessLetterboxed
  14. TouchstonesBookMobileBookLetterboxed
  15. Tunecho Music-Play Offline深圳迪威辛科技有限公司MusicLetterboxed
  16. YacineGautier LortieMagazines & NewspapersLetterboxed
  17. myWhiskiesScott FreedlunFood & DrinkLetterboxed
  18. A.T.O.C.Jacob KnightBusinessLetterboxed
  19. Air Traffic ControlDora.net LLCTravelLetterboxed
  20. Bennet Test FullAliaksandr UvarauMedicalLetterboxed
  21. C&O Canal ExplorerC&O Canal TrustNavigationLetterboxed
  22. Canada WeatherTailwheel Labs Ltd.WeatherLetterboxed
  23. CastlevaniaKONAMIGamesLetterboxed
  24. Earthquake 3DRichard WoltonNewsLetterboxed
  25. HazMat ReferenceThatsMyStapler Inc.ReferenceLetterboxed
  26. JotaliciousErik EgglestonShoppingLetterboxed
  27. Koder Code EditorReny MustikaDeveloper ToolsLetterboxed
  28. LadderTouchMotonari HibiDeveloper ToolsLetterboxed
  29. Let's create! Pottery HDInfinite Dreams Inc.EntertainmentLetterboxed
  30. Paintabedalkareem omreyhGraphics & DesignLetterboxed

Automatic check, daily · updated

As of Nov 10, 2026, 27 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