Windows only
C⁴ Clock is a Windows application and requires a Windows PC. It isn’t available for macOS or Linux.
Download 
Clock
C⁴ Clock is for Windows only. Install it and use the Free edition, or choose to start a 30-day Pro trial whenever you’re ready.
Need the PowerPoint add-in on a presentation PC?Download the add-in only Install it on each PC that runs PowerPoint.Add-in 0.1.97 removes background temporary presentation saves. Online-video package information updates after you save the presentation.Chrome may flag this new add-in as uncommon or suspicious while it builds a download reputation. This is the official C⁴ installer from c4clock.com. Keep browser protection enabled and scan the file if prompted.
Version 5.77.201
The Windows installer is unsigned. Windows or your browser may show a security or publisher warning. Keep security protections enabled and follow your organisation’s IT policy.
Try Pro when it suits you
You can start the 30-day Pro trial at any time. There’s no need to begin the trial as soon as you install the app.
COMPANION · MANUAL MODULE PACKAGE
C⁴ Clock for Bitfocus Companion
Awaiting Bitfocus approval. Manual installation is available in the meantime.
Download module 1.0.1 for Companion 5.0 or newer. This is a .tgz module package to import into Companion—not a Windows .exe installer or an approved Companion Store listing.
Version 1.0.1 adds graphical radio-mic battery and RF presets, assigned speaker names and hold-to-view mic labels. DEMO tiles let you preview the graphics; they are examples, not live readings. Live presets require a compatible C⁴ build and configured receivers.
Download Companion moduleImport and connect
- Back up your Companion configuration before replacing an older/private module.
- Keep the downloaded .tgz file intact. In Companion, open Modules → Import module package and select it.
- Add a C4 Clock connection. On the clock PC, enable Web Display and, for commands, Web Control with the required C⁴ permissions.
- Enter the clock PC’s reachable IP and the web port shown in C⁴ settings. New C⁴ 5.77.199 installations default to 44044; updates retain the existing saved port, which may be 8080. Use 127.0.0.1 only if both apps run on the same PC. Drag the supplied presets onto your Companion page and test before the show.
Use a trusted show LAN. Do not expose C⁴’s control port to the internet.
Module source and setup notes → · Companion module import guide →
Other tools
PDF → PPT
Free Windows toolC4 PDF to PPT Convertor
Need the PDF to look right on the show screen, not become editable? Flatten each page into a sharp PowerPoint slide image, keeping the displayed fonts and layout together.
- Match the PDF’s aspect ratio, choose a preset or enter your own.
- One page per slide, with no cropping or stretching.
- Image quality up to 4K.
- Runs locally on Windows; your PDFs are not uploaded.
Slides contain images, not editable text. For mixed page sizes, the first page sets the slide ratio and other pages fit with white margins. PDF to PowerPoint for AV shows: how it works and FAQs →