LTC Timecode Generator

Upstage Interactive

About this app

Generate SMPTE LTC Timecode from your Android! (Free version)

https://www.android-timecode-generator.com

Outputs through your audio/headphone jack to any camera, video recorder, or whatever!
Jam sync your cameras to your Android!

This is the ONLY app on the Android market (right now) that actually generates timecode that your devices can listen to. (Similar to iOS apps MovieSlate and Clockit)

Fully functional free version generates 24fps, 25fps, and 30fps NDF timecode, locked to time of day.

Upgrade to the paid version to unlock user bits, more framerates including 29.97 (NDF or DF) and 23.976, and the option to start timecode at a custom time instead of time of day.
https://play.google.com/store/apps/details?id=com.AaronBernstein.ltctimecodegeneratorpro

Tested with:
Sony EX3
Aja Ki-Pro
Panasonic HPX2100
Panasonic SD93
Panasonic AJ-D450

Ratings and reviews

Synced great with my Tascam DR-701D via BNC. I did notice a difference of a few frames though between the app and recorder, but it did not drift at all for 4 hours, so all good. I'm hoping to use to record in free-run so I hope the camera being used will sync with it. It's clearly designed to give equipment a taste of smpte for free-run as it won't run in background, so not usable for people wanting to shoot on their 4K phones.