New check

Comparison

Claspo — Popup Builder vs Popupsmart

Claspo — Popup Builder lands on Depends, and Popupsmart lands on Worth it.

Claspo — Popup Builder

Depends

Confidence: Low

Independent evidence on Claspo is thin . no third-party reviews or published pricing surfaced in the sources reviewed.

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Popupsmart

Worth it

Confidence: Medium

Buy if you run a small Shopify store, WordPress, or Webflow site and want cheap, fast popups with a real free tier.

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Claspo — Popup Builder versus Popupsmart
Compare	Claspo — Popup Builder	Popupsmart
Verdict	Depends	Worth it
Best for	Small stores growing email lists	Small Shopify and ecommerce stores
Who it's not for	Buyers wanting a proven vendor . no independent reviews found	High-traffic sites . pageview billing gets expensive fast
Privacy	No known public vulnerabilities found in the sources reviewed.¹⁰	No known public vulnerabilities found in the sources reviewed.
Support quality	No user support evidence found	No clear support evidence found in sources
Public sentiment	No independent user reviews of Claspo surfaced; the one Reddit thread reviewed praises competitor OptiMonk instead.^⁵	Users consistently praise ease of use and value for money, with occasional complaints about pageview limits and slower mobile load times.¹¹
Biggest gotcha	'Free' is the only pricing signal . expect limits on impressions or features once you scale^¹	Pageview metering: a traffic spike can bump you into a pricier tier mid-campaign.¹⁵

Pick Claspo — Popup Builder when

Small stores growing email lists
Marketers testing free popup templates
Non-technical site owners

When Claspo — Popup Builder is not a fit

Buyers wanting a proven vendor . no independent reviews found
Teams needing published pricing before signup
Anyone expecting a documented security posture
Guess: large CRO teams needing advanced analytics and testing depth

Pick Popupsmart when

Small Shopify and ecommerce stores
Solo marketers and non-technical founders
Sites testing email capture cheaply
WordPress or Webflow sites needing quick popups

When Popupsmart is not a fit

High-traffic sites . pageview billing gets expensive fast
Teams needing advanced segmentation or enterprise-scale personalization
Performance-obsessed mobile sites . users report widget load-speed hits
Buyers wanting a full email marketing suite . this is popups only

Sources

Claspo homepageclaspo.io
official
20 Best Popup Apps for 2026 . Maestramaestra.io
review
Popupsmart homepagepopupsmart.com
official
Popup Maker . WordPress.orgwordpress.org
official
Reddit r/Wordpress . popup plugin discussionreddit.com
review
Best WordPress Popup Plugins 2026 . MonsterInsightsmonsterinsights.com
review
Hackers Compromised 3,300 Websites via Popup Builder CVEcybersecuritynews.com
news
Balada Injector exploited Popup Builder flaw . SecurityAffairssecurityaffairs.com
news
WPScan . Popup Builder pluginwpscan.com
security
Claspo security page (not found)claspo.io
security
Popupsmart Reviews . G2g2.com
review
Popupsmart . Shopify App Store reviewsapps.shopify.com
review
Popupsmart . Capterra reviewscapterra.com
review
Popupsmart . Trustpilottrustpilot.com
review
Popupsmart pricing analysis . PopupBuilder.iopopupbuilder.io
review
Popupsmart overview . PopupBuilder.iopopupbuilder.io
review