The app is free to use
Start with core features for OBS display, comment handling, Super Chat highlights, and audience participation without paying for the app itself.
YouTube Live / OBS Companion
Castdeck
Turn comments into live momentum.
Castdeck brings YouTube Live chat, Super Chats, text-to-speech, audience games, and purchase notifications into one stream layout. Paste one layout URL into OBS, then turn important moments into visuals, audio, and effects.
Latest Update Latest v0.5.0 released on July 25, 2026 Added subscriber countdown goals and simplified in-app support for distributed builds. View release history
Free to use
One OBS layout URL
Text-to-speech
Real-time AI advice
Gift notifications
Subscriber countdown
Audience games
Beta release v0.5.0 / macOS Apple Silicon and Windows x64
Engagement
Turn every viewer message into the next live moment.
First-time greetings, regular viewers, members, and Super Chats all move fast. Castdeck organizes those signals and connects them to on-screen effects, readouts, pinned highlights, and audience participation.
Live Control
Keep live decisions and actions in one screen.
Watch comments, Super Chats, pinned messages, and goals while adjusting the OBS layout, readout rules, and audience games without breaking the pace of your stream.
Free Start
Start for free.
Castdeck is free to use. Start with OBS display, comment handling, Super Chat highlights, and audience participation, then grow your stream layout step by step.
AI Advisor
Think through the next live action with AI.
AI advice can watch the comment flow and stream energy, then suggest talking points, thank-you messages, and effect ideas so you can react at the right moment.
Separate usage fees may apply depending on the AI provider you choose.
Audience Growth
From “just watching” to “I want to join.”
When a streamer reacts quickly to comments and support, viewers feel present in the show. Castdeck makes that response easier to repeat.
Important comments are harder to miss
Sort regular comments, first-time viewers, members, and Super Chats so streamers can find the reactions worth picking up.
Show your best thanks the moment support arrives
Highlight Super Chats and member reactions with visuals, audio, and pinned messages so everyone shares the appreciation.
Visualize the energy of the live stream
Goals, stats bars, and audience games make the momentum visible and encourage more viewer participation.
Revenue Moments
Turn support moments into the next wave of support.
Castdeck helps you catch Super Chat, membership, and regular-viewer moments, then respond in ways that make the stream easier to support.
- Highlight Super Chats with visuals, audio, and pinned messages
- Show BASE orders and Amazon wishlist syncs as purchase and gift notifications
- Handle first-time greetings and regular viewer reactions quickly
- Share support goals and subscriber countdown progress on screen
- Use stream data as material for AI-powered improvement ideas
One OBS layout URL
Place chat, pins, goals, stats bars, notifications, and games in one layout, then paste one URL into OBS.
Comment operations
Organize first-time viewers, members, and Super Chats, then connect them to readout and pinning rules.
Goals and subscriber countdowns
Show support targets, project progress, and subscriber-count countdowns during the stream.
Effects and games
Trigger live voting, audience games, sound effects, images, and videos based on live reactions.
Use Cases
What the current Castdeck beta can do
When you want to catch, show, or amplify a live moment, Castdeck connects that intent to visuals, audio, effects, and AI suggestions.
Use one OBS URLPlace chat, pins, stats, goals, notifications, effects, and games in one layout.
Show chat cleanly on screenTune the chat frame, visible count, text size, colors, and borders.
Notice first-time viewers and membersUse conditional pins to separate the comments you want to notice.
Thank Super Chats immediatelyCombine amount rules, pinning, readout, and effect triggers.
Read aloud only the comments you chooseAttach text-to-speech on/off to pinning rules.
Run subscriber milestone streamsShow subscriber-count countdown progress on screen.
Share campaign progressDisplay support targets and intermediate goals during the stream.
Show stream energy as numbersShow comments, Super Chats, amount, likes, and elapsed time in a stats bar.
Add audience participation gamesAdd games designed around live comment participation.
Let viewers choose the next segmentUse live voting to make choices visible.
Share purchases and gifts on screenShow BASE orders and Amazon wishlist syncs as gift notifications.
Get help with what to say nextLet the AI advisor suggest topics, names to call, and thank-you moments.
Switch the stream mood quicklyUse themes and presets to update chat, pins, goals, and other parts together.
Use images and videos as effectsManage images, audio, and video assets, then connect them to live reactions.
Preview effects before going liveTest effects before sending them to OBS, then adjust size and motion.Comparison
Where Castdeck fits among streaming tools
Streamlabs and StreamElements are strong for widgets and assets. Nightbot focuses on chat moderation, while Streamer.bot is powerful for custom automation. Castdeck is designed around one-screen YouTube Live operations: comments, OBS effects, readouts, Super Chat reactions, AI advice, and audience participation.
★ Where Castdeck is especially strong
☑️ Built in or easy to use as a main workflow
△ Possible, but often needs separate setup or custom work
ー Not clearly available as a standard feature
| Feature | Castdeck | Streamlabs | StreamElements | Nightbot | Streamer.bot |
|---|---|---|---|---|---|
| YouTube Live comment capture | ☑️Designed around YouTube Live | ☑️Supported through Cloudbot and related tools | ☑️Supported through chatbot features | ☑️YouTube and Twitch support | ☑️Supports YouTube events |
| Live dashboard during the stream | Castdeck☑️Comments, Super Chats, pins, and goals in one view | △Often managed feature by feature | △Mainly web management | △Bot management focus | △Can be built with custom flows |
| Comment type organization | Castdeck☑️Regular, first-time, member, and Super Chat comments | △Handled through events and chat features | △Chatbot-oriented setup | △Commands and regulars features | △Built with event logic |
| Super Chat processing queue | Castdeck☑️Track unhandled and completed support items | △Alert-centered | △Alert and tip-centered | ーMainly bot usage | △Custom event workflow |
| Manual pinning and highlight display | Castdeck☑️Pin important comments immediately | △Possible with widgets | △Possible with overlays | ーChatbot focus | △Can be built with OBS control |
| Conditional text-to-speech | Castdeck☑️Can link to pinning conditions | △Usually needs another setting or external tool | △Usually needs another setting or external tool | ーNot a typical standard use | △Requires audio or external integration |
| OBS browser source display | ☑️Built-in integrated layout URL | ☑️Widgets and Alert Box | ☑️Overlays and widgets | ーBot management focus | △OBS control and integration |
| Stream layout editor | Castdeck☑️Check layered parts inside the app | △Usually widget by widget | △Overlay editor focus | ーOut of scope | △Check on the OBS side |
| Design theme sync | Castdeck☑️Apply theme to chat, pins, goals, and more | △Theme/widget-level setup | △Overlay-level setup | ーOut of scope | △Custom workflow |
| Goal display and support targets | ☑️Includes subscriber countdowns | △Tip/widget related features | △Tips related features | ーOut of scope | △Custom external integration |
| Stats bar and stream momentum display | ☑️Show comment and support status | △Possible with widgets | △Possible with widgets | ーOut of scope | △Custom OBS integration |
| Audience participation games | ☑️Managed inside the same app | ☑️Mini-games through Cloudbot and related tools | △Widgets or external integration | △Giveaways focus | △Can be built freely |
| Asset management | Castdeck☑️Manage images, audio, and video in the app | △Widget and theme assets | △Overlay assets focus | ーOut of scope | △Link external assets |
| Viewer analytics and stream improvement | Castdeck☑️Combines comment trends and AI suggestions | △Analytics and management features exist | △Logs and management focus | △Log-centered | △Data use depends on custom setup |
| AI advisor | Castdeck☑️Suggests actions from stream data | △AI features are limited by use case | ーNot clearly available | ーNot clearly available | △Possible with external AI integration |
| Local desktop operation | ☑️Desktop app | △Cloudbot and desktop-related tools | ーMostly cloud/browser-based | ーCloud/browser-based | ☑️Desktop app |
| One-screen live operation | Castdeck☑️Controls are gathered into one operator screen | △Combine multiple features | △Multiple pages/settings | △Bot setup focus | △Requires custom building |
Comparison is based on general public information and positioning. Castdeck is currently improving as a beta release, so feature scope will be updated with each release.