Song requests, live votes, effects your viewers fire, and points for every show they turn up for, so the people who watch once come back. One browser source in OBS. Nothing for your viewers to install.

They get the controls. You get everything behind them, from any browser, mid-show.
Approve songs, start a poll in ten seconds, fire any effect yourself, set tonight's goal and see who's in the room, all from the tab beside OBS.
Cooldowns, per-viewer limits, a banned-words filter that catches disguised spellings, and your approval first for any song or message you'd rather check. Nothing your crowd does gets past them.
How many took part, who was new, how many came back, and one idea for next time, with OBS time before and after the show left out. It reports what your crowd did, never a grade on your show.
The overlay, songs, polls and effects work on any stream, because they live in OBS and on your viewers' phones. On Whatnot, the Chrome extension on your own live page counts chat and purchases toward points and brings chat commands. Twitch is in beta, Kick and YouTube are coming, and TikTok LIVE runs without points. On all of them, CrowdRig never posts in your chat.
Nothing while CrowdRig is in beta, with everything unlocked. Hosts who start during the beta are founding members: 20% off any plan, for life, when billing opens.