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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. WeePhone SIPJustin BradySocial NetworkingLetterboxed
  2. uCardMaxim RebitskyShoppingLetterboxed
  3. Call RecorderLiveBird Technologies Private LimitedBusinessLetterboxed
  4. Combine Voice Memos +Gang NiuUtilitiesLetterboxed
  5. Daniel Tiger’s Play at HomePBS KIDSEducationLetterboxed
  6. Green Screen by Do InkDK Pictures, Inc.EducationLetterboxed
  7. InspiritedBenjamin MullerFood & DrinkLetterboxed
  8. Jason Vale’s 7-Day Juice DietJuice MasterFood & DrinkLetterboxed
  9. Local 10 + PlatinumWPLG, IncNewsLetterboxed
  10. Money box AppKonstantin AkchurinFinanceLetterboxed
  11. Nighty Night ForestFox and Sheep GmbHBookLetterboxed
  12. Pennsylvania State RoadsCoderun Technologies LtdTravelLetterboxed
  13. Pleasure MachineAfinodeLifestyleLetterboxed
  14. Rifle Hunt SimulatorKristian StensoenesSportsLetterboxed
  15. SecurityKitINNOVATIVE DIGITAL TECHNOLOGIES LIMITEDDeveloper ToolsLetterboxed
  16. SnoreClockRalph-Ruediger SchiffhauerHealth & FitnessLetterboxed
  17. Strong’s ConcordanceGlen RamsayReferenceLetterboxed
  18. SweetRing ProSweet Tech Ltd.Social NetworkingLetterboxed
  19. Villain SocietyClean Vintage, LLCShoppingLetterboxed
  20. Visual Attention TherapyTactus Therapy Solutions Ltd.MedicalLetterboxed
  21. WeatherMap+Michal FrankowskiWeatherLetterboxed
  22. American Mensa Brain TestBarnstorm GamesEducationLetterboxed
  23. Audio Recorder Pro & PlaybackLiveBird Technologies Private LimitedBusinessLetterboxed
  24. CloudBeatsRoman BurdaMusicLetterboxed
  25. DysphagiaNorthern Speech Services, IncMedicalLetterboxed
  26. Easy SSHArgsment LimitedDeveloper ToolsLetterboxed
  27. Ice and MixedWill Gadd Consulting Inc.SportsLetterboxed
  28. Jason Vale’s Super Juice Me!Juice MasterFood & DrinkLetterboxed
  29. La Biblia Reina Valera EspañolOleg ShukalovichBookLetterboxed
  30. LocalSendTien Do NamUtilitiesLetterboxed

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