Guide
5 free conference engagement tools
You don't need a big budget to make a conference interactive. Here are five tools you can use for free, with the real limits spelled out, so there are no surprises on event day.
Last verified: October 2026
"Free" means different things across these tools. Some offer an ongoing free tier; others cap questions or participants; one isn't a live tool at all but is still useful. We've noted the catch for each so you can plan around it.
We build EVOCA and list it first, but the limits below are described honestly, including where a free plan will run out before your event does.
Free up to 100 attendees
EVOCA's free tier includes live Q&A, feedback, and real-time emoji reactions for events up to 100 attendees, with no credit card and no app download. It's a genuine free tier for small conferences and meetups, not a time-limited trial.
Free for 100 participants per slido
Slido's free Basic plan, as listed on slido.com/pricing on 21 October 2026, covers Q&A for up to 100 participants per slido, plus 3 polls and 1 quiz. That participant cap is the same size as EVOCA's free event, not lower. Heavier use, including unlimited polls, is a paid plan.
Free for 50 participants a month
Mentimeter's free plan is built for visual polls and quizzes on a slide. The limit that matters is 50 participants per month across presentations, not a cap on how many questions one presentation can hold. One presentation can run past 50 people, and then further presentations wait until the monthly counter resets. The head-to-head has the details.
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AhaSlides
Free with a participant cap
AhaSlides offers quizzes and Q&A for free up to a set number of participants per event. Confirm the current cap, as it changes and can be low for a conference room.
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Google Forms
Completely free
Not built for live engagement, but genuinely free and reliable for pre- and post-event surveys. Pair it with a live tool for in-the-moment reactions and Q&A.
Frequently asked questions
Free for events up to 100 attendees
Speakers get 5 talks free forever. Organizer events are free up to 100 attendees and one admin. No credit card, no app download, and your audience joins in seconds.