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C⁴ Clock / Operator workflow

PowerPoint stage timing. Fewer show surprises.

A final click before you’ve switched away. A deck that advances itself. A presenter spotting the wrong font during rehearsal. C⁴ brings the checks, timing and PowerPoint controls into the operator’s workflow.

Free Windows stage timer with deep PowerPoint integration.
Connect the C⁴ add-in on each presentation PC. Keep countdown, slide progress and media timing together at the desk.

Free Windows download
Standalone preflight tools · Pro warnings in C⁴ Clock

“That’s not the right font.” Catch it before rehearsal.

You don’t always know how a supplied deck should look. A substituted font can be the first thing the presenter notices—and the last thing you want to discover in front of them.

The C⁴ add-in reports detected missing fonts and their slide locations. Its preflight report also shows whether slide timings are enabled and whether saved automatic timings are present, so you can check a deck that might advance itself.

Check fonts and saved timings before rehearsal →

Before the first rehearsal

  • Fonts: review reported font names and slides.
  • Timings: check whether automatic advance is intended.
  • Media: locate video and audio before playback.

The add-in’s scan report works as a standalone speaker-prep tool. Pre-show and live warning displays in C⁴ Clock require Pro or an active Pro trial.

Included in Free and Pro

Keep the last slide up until you switch away.

The presenter finishes and clicks once more. You’re still on their source. Freeze last slide blocks supported forward keyboard and clicker inputs after the final build, giving you time to make the switch.

Toggle the snowflake on the connected PowerPoint source in C⁴—even mid-show. Final builds and backward navigation remain available. Esc still exits.

Hold the final slide and test the remote →

Freeze last slide snowflake toggle on a connected C⁴ PowerPoint source
Test the actual remote. Mouse clicks and automatic timed advances are not covered.
Playback timing in Free · upcoming warnings in Pro

Know when the video finishes. Be ready for the next cue.

See elapsed and remaining time for reported PowerPoint media playback alongside the speaker countdown. C⁴ Free includes media duration timing and one PowerPoint source. Pro supports up to four sources.

Pro’s upcoming-media warnings flag video or audio before the presenter reaches the slide, including reported click-to-play media.

Follow playback timing and upcoming cues →

C⁴ PowerPoint media panel showing video playing, elapsed time and time remaining
Playback time stays separate from the presenter’s allotted time.
Normal monitoring and arming in Free and Pro

Start the clock when the presenter advances.

Arm the countdown before the handover. With the presentation on slide 1, the clock can start as the presenter advances to slide 2—one less start button to remember while you manage the room.

Pause, resume and manual start remain available. Rehearse the automatic-start workflow →

C⁴ automatic countdown start workflow: arm the timer before the presenter advances through PowerPoint
Pro or an active Pro trial

Next presenter. Timer loaded. PowerPoint ready.

Import the run sheet, review names and durations, then explicitly link each presenter’s PowerPoint. With AUTO LOAD PPT on, LOAD NEXT loads their timer and opens the linked Main and optional Backup decks in slideshow on slide 1. Arm separately when you’re ready.

Watch the handover workflow. Pro or an active Pro trial is required for linked loading.

Follow the handover workflow → · Detailed setup and folder approval →

Connect it to the show.

  1. Download C⁴ Clock for the Windows clock PC.
  2. Install the C⁴ add-in on each Windows desktop PowerPoint PC. Close PowerPoint during installation.
  3. Connect and check. Use the same show network and matching clock IP, source and receive port. Confirm slide changes reach C⁴ before the session.

PowerPoint connection guide → · See C⁴ at the operator desk →

Which edition do I need?

C⁴ Free includes the countdown, one PowerPoint source, slide counts, media duration timing and Freeze last slide. Pro adds up to four sources, pre-show and live warnings, linked deck loading and run sheet tools. See the full feature comparison.

Free can be installed on unlimited machines. Pro includes three Clock machine activations. PowerPoint source limits and Clock machine activations are separate. The integration is for Windows desktop PowerPoint.

Solve the next show problem

Hold the last slide until you switch awayKeep a final click from dropping the deck out before the vision switch. Enable Freeze last slide and test the actual remote.Read the guide →Catch missing fonts and saved slide timings before rehearsalFind reported missing fonts by slide and check automatic timings before the presenter reaches the lectern.Read the guide →Start the countdown when the presenter advancesArm the clock for the start of the talk while keeping normal timer controls available.Read the guide →Know when the PowerPoint video finishesSee elapsed and remaining playback time, and prepare for upcoming video and audio cues.Read the guide →Load the next presenter without juggling windowsImport the run sheet, link the decks and use LOAD NEXT to prepare the timer and slideshow together.Read the guide →Convert PDF slides without rebuilding the layoutKeep the displayed fonts and element positions together as a page image on each PowerPoint slide.Read the guide →

Try it with your next presentation

Download C⁴ Clock Free for Windows. Start the optional 30-day Pro trial when you are ready to explore the additional tools.

Download for WindowsCompare Free and Pro