Custom split-flap messages
Create custom messages on a 24-column by 8-line split-flap layout, then send a message immediately or save it for later use.
KarmaBoard
KarmaBoard turns browser-capable TVs and other screens into 24×8 split-flap message boards for custom text, playlists, menus, announcements, and live feeds. It is designed for homes, cafés, offices, schools, hospitality venues, and travel displays that want remotely managed signage without dedicated split-flap hardware.
Browser-based split-flap displays for existing screens
KarmaBoard is a browser-based split-flap display app that turns an existing TV, monitor, tablet, computer, or other browser-capable screen into a 24-column by 8-line message board. It reproduces the visual transition and click-clack sound of a mechanical departure board without requiring dedicated split-flap hardware.
Users can write custom messages, send one immediately, or organize messages and live feeds into playlists. The service is suited to home message boards and public-facing displays such as café menus, specials, event notices, office announcements, school schedules, hotel information, and travel updates.
Key features
Live information feeds
Combine custom text with weather, news, sports scores, stock and crypto data, flights, Amtrak departures, quotes, historical facts, and a time-and-date display.
Automatic playlists
Save messages and live content into looping playlists. Screens pick up playlist edits, additions, and reordering within a few seconds without re-pairing.
Browser-based screen pairing
Open the player in a browser and pair a TV, tablet, computer, monitor, or streaming stick with a six-character PIN, then manage the display remotely.
Per-screen display controls
Choose a light or dark look per screen and enable or disable flap sounds. Browsers may require an initial tap or click before audio can play.
Device-aware playback
Adapt the player to different browser hardware: higher-powered devices provide richer animation and audio, while less powerful TVs and streaming sticks use a lighter version for smoother playback.
Practical use cases
Home message board
Display family notes, dinner plans, weather, scores, and short reminders on a household TV. A playlist can rotate recurring information without requiring each item to be rewritten.
Café and bar menus
Publish breakfast, lunch, dinner, drinks, specials, or tap lists on a café or bar screen. Staff can update short menu lines from a phone and switch the active playlist as the day changes.
Office and workplace communications
Use a lobby, break-room, or reception display for announcements, welcome messages, KPIs, market updates, or rotating operational information managed from a phone or computer.
Schools and event spaces
Show schedules, lunch menus, countdowns, reminders, and event information on a school or venue screen using separate playlists for different activities.
Hospitality and travel information
Present welcome messages, event details, Wi-Fi information, local weather, and flight or train departures in hotels, airports, and stations where browser-capable displays are available.
Pros and Cons
Pros
- Uses existing browser-capable screens rather than dedicated split-flap hardware.
- Supports both one-off messages and recurring playlists with live information feeds.
- Screens can be managed remotely and playlist changes appear within a few seconds.
- Includes per-screen light/dark themes and flap-sound controls.
Cons
- The player requires a modern web browser and performance varies by device; smart TVs and streaming sticks may use simpler animations and sound.
- The wide 24-column layout is best suited to a 16:9 display, and individual lines are limited to 24 characters and 8 lines for menu-style boards.
- Browser autoplay rules may prevent flap sounds until the screen is tapped or clicked, or the site's sound permission is enabled.
FAQ
How do I set up and pair a screen?
Sign in at karmaboard.app, write a message in the Edit tab, open karmaboard.app/player on a TV, computer, tablet, or streaming stick, and pair the screen by entering its six-character PIN under Screens. After pairing, send a message or playlist to the display.
What is the difference between sending a message and using a playlist?
A message sent to a screen appears immediately and remains until another message is sent. A playlist rotates through saved messages and live content such as weather, news, sports scores, flights, and trains.
What devices and browsers are supported?
KarmaBoard runs in modern Chrome, Safari, Edge, and Firefox browsers. No app installation is required. It works on smart TVs, streaming sticks, computers, tablets, monitors, and phones, although a 16:9 widescreen display is recommended for the best layout.
How much does KarmaBoard cost?
The first paired screen has a seven-day free trial, with no card required to start. After the trial, the price is $9.99 per screen per month. Each additional screen is billed from day one, and one trial is available per account.
Can KarmaBoard display rotating menus?
Menus can use up to 24 characters per line across 8 lines. Messages can be saved into playlists for breakfast, lunch, dinner, specials, or drinks, and the active playlist can be switched from the Screens tab.
Quick Facts
- Category
- Digital signage and display app
- Display format
- 24 columns × 8 lines split-flap board
- Player
- Browser-based; no app installation required
- Supported screens
- Smart TVs, streaming sticks, computers, tablets, monitors, and phones
- Pricing
- $9.99 per screen per month; seven-day trial on the first screen
- Primary workflows
- Custom messages, rotating playlists, menus, announcements, and live feeds
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