The one and only sync testing app.
Catchin' SYNC let's you visually observe the sync points of the video and audio, and let's you move the audio back in sync by touching the screen to get a reading.
With up to 240fps recording capability, its accuracy is unquestionable.
No need to spend wads of cash on hardware devices!
"Catchin’ Sync is an invaluable tool for anyone in the film industry. In this day and age, we have so many ways of viewing and listening to our work. Every screen, whether it is a projector, LED, LCD or Plasma, all have a degree of delay. Additionally audio monitoring will have a variable delay as well based on the distance of the speakers to the listening position. Catchin’ Sync is a genius iPhone APP that is, in my opinion, imperative for any editor to have to properly judge and correct a visual and audio delay."
— Harrison Meyle | Dialogue Supervisor | Warner Bros