Comparison

Top Hat vs Slido

Top Hat lands on Depends, and Slido lands on Worth it.

Top Hat

Depends

Confidence: Medium

Buy if you run large interactive lecture courses with institutional budget and campus IT/pedagogy support.

Worth it

Confidence: Medium

Buy if you run recurring meetings, lectures, or events where live Q&A and polls lift engagement.

Top Hat versus Slido
Compare	Top Hat	Slido
Verdict	Depends	Worth it
Best for	Large lecture courses	Conference and event organizers
Who it's not for	Small classes or solo tutors . overkill	One-off surveys . Google Forms is free
Privacy	No known public vulnerabilities found in the sources reviewed.¹¹	Cisco-owned, UpGuard grade A (893/950), Microsoft 365 certified; one medium-severity REST API vulnerability (CVE-2026-20219) disclosed.
Support quality	No support-quality evidence found	No support evidence in sources reviewed
Public sentiment	Reviews split sharply: universities praise the engagement feature set while professors on Reddit warn against adopting it and students resent per-term fees.^³	Users praise Slido's ease of use and anonymous Q&A; trade-offs appear around customization and pricing.
Biggest gotcha	Costs fall on students each term, purchased directly through Top Hat	Five pricing editions and multiple annual license models . confirm participant caps before committing