Pricing
No account, no card, no session limits, no cap on how long you present.
No account. Nothing to install.
We would rather say nothing than invent a number.
Anything that could fail while you are on stage.
The obvious way to sell software like this is a time limit on the free plan. We are not going to do that, and it is worth explaining why, because it is the single decision that shapes everything else here.
If your cue channel died forty-five minutes into a talk, you would have to say "next slide" out loud, in front of an audience, which is the exact thing you started using SlideCue to avoid. Recovery would be worse than the failure: whoever is running your deck would have to reopen a link and re-arm their phone while you stood there. So no time limits, no cue counts, and no reduced reliability on the free plan. Free and paid run on the same relay, with the same delivery path.
What a paid plan will sell instead is preparation and memory: things that help before an event and after it, and that are worthless to somebody who presents twice a year.