Head-to-head · Popup Software
Claspo vs FireBox
Claspo leads on 0 checks, FireBox on 2, and 1 is even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreClaspo · 8.9/10
- Free planboth
- Most featuresFireBox · 2 of 3
Claspo scores higher on our rubric for popup software: 8.9 against 6.7 out of 10; our editors rank them #1 and #8.
FireBox offers exit-intent triggers; Claspo doesn't publish it. FireBox offers custom css; Claspo doesn't publish it.
Claspo is the better fit for broad popup campaigns on a free plan. FireBox is the better fit for wordPress campaigns with revenue analytics.
- Claspo fits best
Broad popup campaigns on a free plan
- FireBox fits best
WordPress campaigns with revenue analytics
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Side by side
| Feature | Claspo 8.9/10 Visit ↗ | FireBox 6.7/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.9 | 6.7 |
| Ranking | #1 in Popup Software | #8 in Popup Software |
| Best for | Broad popup campaigns on a free plan | WordPress campaigns with revenue analytics |
| Pricing model | Free plan + paid | Free plan + paid |
| Starting price | Not published | Not published |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Cloud | Self-hosted |
| Platforms | Web | Web |
| Integrations | 12 integrations | 15 integrations |
| Features Claspo 0/3 · FireBox 2/3 | ||
| Exit-intent triggers | Not published | ✓ (best) |
| A/B testing | Not published | Not published |
| Custom CSS | Not published | ✓ (best) |
| Specs | ||
| Monthly view limit | Not published | Not published |
| Targeting rules | Not published | Advanced |
| Popup formats | Not published | Overlay |
| Analytics reports | Not published | Advanced |
| Our review | ||
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| Cons |
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| Our verdict | Claspo is a web-based popup builder for online businesses focused on lead capture, email-list growth, and sales campaigns. Its drag-and-drop editor supports popups, floating boxes, floating bars, embedded widgets, fullscreen layouts, and… Read the review → |
FireBox is an open-source WordPress plugin for building targeted popup campaigns with the Gutenberg editor. It suits site owners, marketers, and WooCommerce businesses that need more than a basic overlay, including lead capture,… Read the review → |
Strengths and trade-offs
Claspo — where it wins
- Free plan includes all features and unlimited widgets
- Supports detailed targeting, A/B testing, and real-time analytics
- Connects with major CRM, email, ecommerce, and tracking tools
Where it doesn't
- Free plan supports only one website
- Free widgets include a Powered by Claspo badge
- Enterprise & Agency pricing uses custom terms and contracts
FireBox — where it wins
- Advanced targeting across URLs, devices, geography, roles, and WooCommerce
- Eight popup formats with triggers from exit intent to element visibility
- Revenue attribution, funnel analysis, and integrations across marketing tools
Where it doesn't
- No verified A/B testing
- Basic is limited to one website
- Advanced integrations are reserved for higher-priced plans
- Claspo8.9/10 · Free plan · 14-day trial
A broad popup toolkit with a free plan, targeting, testing, analytics, and integrations.
Visit ClaspoFull verdict → - FireBox6.7/10 · Free plan · paid from €59/yr
A broad WordPress popup toolkit with revenue analytics, but no verified A/B testing.
Visit FireBoxFull verdict →
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All popup software comparisons → · Full ranking →
Guides on popup software
- Expert-Recommended Best WordPress Popup Plugin: 2026 Buyer’s GuideAug 2026
- The 5 Best WordPress Popup Plugins of 2026 (Compared)Aug 2026
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
Last updated · How we research and update