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Focused LTC Timecode for iPhone and Android

Holly Timecode Keeps Sync Simple

Generate SMPTE LTC, recall named presets, and carry the right GPS metadata without adding extra gear or extra steps.

Available on iPhone and Android with the same core feature set

See Pricing See Features
SMPTE LTC GPS User Bits Named Presets 29.97 DF Defaults

Built for real timecode work on real productions

Film Television Documentary Commercial Live Event

Everything Crews Actually Need.

Built for crews who need reliable timecode, not a pile of extra features.

SMPTE LTC

Generate clean SMPTE LTC from iPhone or Android and jam sync cameras, recorders, and field gear over a proper wired path.

See timecode details

GPS User Bits

Write date, static GPS, or live GPS metadata into LTC user bits without dragging a second workflow onto the cart.

See timecode details

Named Presets

Save named setups for specific clients, trucks, shows, and camera packages so the right frame rate is one tap away.

See presets

Production-Safe Defaults

Broadcast-safe defaults, guarded DF/NDF behavior, and ready-state checks that prevent avoidable mistakes.

See workflow

Wired Output Discipline

Wired-output discipline, output status, and startup checks help crews avoid trying to jam from the wrong route.

See workflow

Works Offline

Core LTC generation stays on-device. No account. No dashboard. No network dependency for the main job.

Timecode Engine

Focused SMPTE LTC for Real Shoots

Holly Timecode is a dedicated LTC tool for crews who need sync fast and clean. It focuses on dependable SMPTE LTC generation, practical field defaults, and the settings you actually reach for on set.

  • Original byte-accurate engineOur own clean-room SMPTE 12M encoder — independently verified for byte-exact output and identical on iPhone and Android, so every device on set jams to the same frame.
  • All standard production rates23.976, 24, 25, 29.97 DF/NDF, and 30 fps
  • 48 kHz broadcast audio48 kHz output for production-friendly LTC generation.
  • Wired output only where it mattersUse headphone or USB audio routes that can actually carry timecode to downstream gear.
  • Visual generation feedbackSee signal activity and verify that you are sending a live LTC stream before you jam.
  • Time-of-day or custom startStart from time-of-day or an explicit custom value to match the workflow in front of you.
  • GPS user bits when you need themWrite date-only, static GPS, or live GPS metadata directly into LTC user bits.

Holly Timecode is built to get crews into the right mode, on the right output path, with the right metadata before the first jam.

Holly Timecode screen showing frame rate, output state, and LTC controls.
Named Presets

One Tap Back to the Right Setup

Named presets turn repeat workflows into one-tap recalls. Save the setup once for each client, truck, or camera package, then stop rebuilding it from memory every call sheet.

Broadcast Truck A29.97 DF • Date bits • -18 dB
Documentary Canon Kit23.976 • GPS Static • -3 dB
  • Save a known-good setup for each client, truck, or package.
  • Jump back to the right frame rate and user-bits mode in one tap.
  • Update presets from the live screen when a workflow changes.
Holly Timecode preset management view with saved named setups.
Workflow

Built to Keep Crews Out of Trouble

Holly Timecode is opinionated where production mistakes get expensive. It pushes crews toward valid output, valid GPS states, and broadcast-safe defaults before they roll.

Pick the right presetLoad the saved setup for this production, truck, or camera package instead of rebuilding it from memory.
Verify the output routeUse a wired audio path and verify readiness before you hit start. Bluetooth is not part of the workflow.
Confirm GPS stateIf you need GPS user bits, the app waits for real permission and a real fix instead of stamping garbage coordinates.
Jam with confidenceJam cameras and recorders only after the app shows the route and mode you actually intend to send.

The idea is simple: reduce the number of ways a tired crew can start wrong. Pick the preset, verify the route, confirm the metadata, and jam.

Holly Timecode screen showing workflow controls and readiness states.

Holly Timecode does the one thing crews actually need from a mobile timecode app: it gets you into the right LTC setup quickly, cleanly, and without drama.

Technical Specifications

LTC Timecode

Format
SMPTE 12M Linear Timecode
Frame Rates
23.976, 24, 25, 29.97 DF/NDF, 30 fps
Sample Rate
48,000 Hz
Output
Headphone or USB audio paths
User Bits
Date, GPS Static, GPS Live, or custom

Named Presets

Count
Save as many named setups as the workflow needs
Fields
Frame rate, DF/NDF, output level, and user bits mode
Apply
One tap from the main screen
Update
Overwrite a saved preset from the current live configuration

Workflow

29.97 Behavior
29.97 defaults to DF, with manual override when exposed
Audio Checks
Ready-state warnings help avoid invalid output routes
GPS Gating
GPS modes require services, permission, and a valid fix
Startup Modes
Time-of-day or custom start time

Requirements

Apple Devices
iPhone XS (2018) or later on iOS 18.0 or later
Android Devices
Android 10 or later with wired USB or line-capable audio output
Output Path
Wired audio required for real LTC workflows
Storage
~50 MB

Every Core Feature. Free.

No paywalls. No feature gates. Optional support tiers help fund continued development if the app earns a place in your kit.

Same core feature set on iPhone and Android. Platform-specific OS and audio-route requirements still apply.

Holly Timecode
Free

All core features included

  • SMPTE LTC Timecode Generator
  • Named Presets
  • GPS User Bits
  • 29.97 DF/NDF Control
  • Wired Output Readiness Checks
  • No Ads, No Tracking
  • Focused Mobile Workflow
Get Holly Timecode
Pro Support
$199.99/year

Annual support tier

  • Everything in Free
  • Support continued development
  • Priority email support
  • For freelancers and owner-operators
Support the App

Cancel anytime through your platform store where applicable

Enterprise Support
$499.99/year

Annual support tier

  • Everything in Free
  • Support continued development
  • Priority support and bug-fix priority
  • For teams, productions, and studios
Support the App

Cancel anytime through your platform store where applicable

Questions? Answers.

Can Holly Timecode replace a hardware timecode generator?

For jam syncing and lightweight field work, yes. Holly Timecode outputs proper SMPTE LTC over wired audio and is a strong replacement for a dedicated box when you need a fast, dependable source. For workflows that require permanently mounted, always-on hardware timecode, dedicated generators still have a place.

Why does 29.97 default to drop-frame?

For 29.97 broadcast workflows, yes. Holly Timecode defaults 29.97 to drop-frame so crews do not accidentally start in the wrong counting mode. If you know you need non-drop-frame, you can expose that control in settings and override it deliberately.

What output path should I use for LTC?

Use a wired USB audio interface, USB-C adapter, or headphone output path that your camera, recorder, or timecode box can accept. Holly Timecode is intentionally strict about wired output because Bluetooth is not a valid LTC sync path.

What are GPS user bits?

GeoLTC uses the LTC user bits to carry GPS information alongside the timecode stream. Holly Timecode can write date-only bits, static GPS, or live GPS updates depending on the setup you need.

What is the main workflow upgrade over generic LTC apps?

Named presets. Save one setup for broadcast TV, another for documentary, another for a client camera package, and stop re-answering the same frame-rate and user-bits questions on set.

What phones does Holly Timecode support?

On Apple devices, Holly Timecode requires iOS 18 and runs on iPhone XS and later. On Android, the same core feature set runs on Android 10 or later. For GPS-based user bits on either platform, you will also want reliable location permission and a clean wired audio path before you roll.

Ready to Stop Rebuilding the Same Timecode Setup?

Clean SMPTE LTC, GPS user bits, and named presets in one production-ready mobile app for iPhone and Android.

Get Holly Timecode