Claspo vs Sumo
An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.
The short answer
Editorial assessmentSumo compared with Claspo
Both lead with a permanent free plan, but they gate different things. Sumo's free tier is generous on traffic and thin on features, while Claspo caps the free plan at roughly 3,000 monthly pageviews and hands over the entire product: A/B testing, the full targeting engine, and eight gamified formats Sumo does not offer at any price. A low-traffic store running promotions gets more out of Claspo's free plan; a busier site that only needs a plain email form stays cheaper on Sumo.
Choose Claspo if
Small ecommerce stores, content sites, and solo marketers who want full-featured onsite capture without a subscription decision on day one, and who value gamified promotional formats and a builder that produces something presentable without design help.
Choose Sumo if
Bloggers, creators, course sellers, and small WordPress or Showit sites that want a capable opt-in popup and form tool with a real free plan and a flat, low, non-traffic-scaled price when they outgrow it.
Side by side
13 attributes| Attribute | Claspo | Sumo |
|---|---|---|
| Category | Lead Capture | Lead Capture |
| Starting price | Free (about 3,000 pageviews per month); paid Pro plans from roughly $29 per month (free plan available) | Free forever; paid plans from $19 per month billed annually ($228 per year) (free plan available) |
| Pricing model | Usage-based subscription metered on monthly pageviews, counted on every load of a page carrying the Claspo script whether or not a widget displays. Features are not gated by tier: the free plan includes the targeting engine, gamification, A/B testing, and integrations. Paid Pro tiers buy higher pageview allowances, remove the Claspo badge, add more websites, and add priority support. Widgets and team seats are unlimited on every plan. | Flat monthly subscription by plan, with limits on number of sites, pageviews per site, and emails sent per month rather than on subscriber count. Annual billing is meaningfully cheaper than monthly. A permanently free plan exists and paid plans carry a 14-day free trial. |
| Free plan | Permanent free plan with all features, unlimited widgets and seats, one website, roughly 3,000 monthly pageviews, and a 'Powered by Claspo' badge | One site, 100 conversions, 500 emails per month, opt-in forms with customizable design, social sharing, basic visitor targeting, and analytics, with BDOW! branding on forms |
| Free trial | 14-day Pro trial, offered when the free plan's pageview limit is reached | 14 days on paid plans, plus a 14-day money-back guarantee |
| Best for | Small ecommerce stores, content sites, and solo marketers who want full-featured onsite capture without a subscription decision on day one, and who value gamified promotional formats and a builder that produces something presentable without design help. | Bloggers, creators, course sellers, and small WordPress or Showit sites that want a capable opt-in popup and form tool with a real free plan and a flat, low, non-traffic-scaled price when they outgrow it. |
| Setup time | Under an hour to a live widget. The script goes in via a template edit, Google Tag Manager, or the WordPress, Shopify, Wix, or WooCommerce integration; the first widget usually comes from a template with the design matching applied automatically. | Under an hour. Create a free account, install the WordPress plugin or paste the script into the site template (or enable the native Showit or Shopify connection), pick a template, set display rules, and connect an email provider. A first live form in fifteen minutes is realistic. |
| Learning curve | Low for the builder, moderate for targeting. Assembling a widget from components is straightforward. The part that takes practice is display logic: combining triggers with audience conditions, setting frequency caps, and using the silence interval so a visitor is not hit by three campaigns in one session. | Low. The builder is conventional and the display rules read in plain language. The part that takes longest is not the tool but the discipline of testing one variable at a time and matching each offer to the page it appears on. |
| Platforms | Web (JavaScript snippet), Google Tag Manager, WordPress, Shopify, WooCommerce, Wix, Mobile web (responsive widgets) | Web (JavaScript snippet), WordPress plugin, Showit, Shopify, WooCommerce, Google Tag Manager |
| Compliance | GDPR, CCPA | GDPR |
| Founded | 2021 | 2014 |
| Headquarters | Ukraine | Austin, Texas (Sumo Group); Formilytics LLC now operates the product |
| Ownership | Independent, founder-owned | Acquired by Showit (December 2023) and operated by Formilytics LLC |
Strengths and limitations
Claspo
Strengths
- The free plan is genuinely full-featured, not a demo: exit intent, A/B testing, advanced targeting, and gamification are all included at zero dollars.
- Eight gamified capture mechanics with configurable prize odds and a distribution report, the deepest gamification set among small-business capture tools.
- Unlimited widgets and unlimited team seats on every plan, which removes the two limits that usually force an upgrade for reasons unrelated to results.
- Automatic design matching and a large template library get a presentable widget live without design help.
Limitations
- Pricing is metered on pageviews of any page carrying the script, not on widget impressions or conversions, so high-traffic sites pay for reach they never use.
- Hitting the pageview ceiling pauses widget display, meaning capture stops silently during exactly the traffic spike you most wanted to capture.
- Permission control is coarse: seats are unlimited but there is no meaningful role, approval, or per-widget access model for larger teams.
- The vendor does not publish SOC 2 or ISO 27001 attestations, which will stall an enterprise procurement review even though the product itself is fine for most small businesses.
Sumo
Strengths
- A genuinely usable free plan with no time limit, which is why Sumo became the default popup tool for a generation of bloggers.
- Flat pricing that does not escalate with subscriber count, unusual in a category where list growth normally raises the bill every year.
- The full catalogue of form types (popup, welcome mat, smart bar, scroll box, click trigger, inline, countdown, social proof) in one dashboard rather than split across products.
- Deep targeting rules for the price point, including cookie and query-parameter conditions that many cheaper tools omit.
Limitations
- A small, dated template library that reviewers repeatedly single out; layouts, buttons, and mobile views are hard to alter beyond the presets.
- No personalization or product recommendation logic, so every visitor matching a rule sees the same manually configured offer.
- Paid plans cap at 25,000 pageviews per site and three sites total, which rules out high-traffic publishers and agency portfolios.
- Public WordPress.org reviews over several years report broken logins, incompatibility with current WordPress versions, and unresolved support tickets; the most recent reviews on that listing are poor.
Pricing compared
Claspo
Usage-based subscription metered on monthly pageviews, counted on every load of a page carrying the Claspo script whether or not a widget displays. Features are not gated by tier: the free plan includes the targeting engine, gamification, A/B testing, and integrations. Paid Pro tiers buy higher pageview allowances, remove the Claspo badge, add more websites, and add priority support. Widgets and team seats are unlimited on every plan.
- Free$0
- Pro 50From about $29
- Pro 100From about $49
- Pro (higher volume)Up to about $299
- Enterprise and AgencyCustom quote
On capability per dollar Claspo is one of the strongest offers in onsite capture, precisely because it refuses the usual feature-gating. Exit intent, A/B testing, geo and UTM targeting, and eight gamified formats at zero dollars is more than most competitors give away at their entry paid tier. The catch is the meter. Pageview-based pricing charges you for traffic that never sees a widget, which makes Claspo cheap for a small store and less obviously cheap for a content site with heavy traffic and modest capture ambitions. Compare on your actual pageview count rather than on the entry price, and if most of your traffic is on pages you would never show a widget on, scope the script accordingly before you compare quotes.
Sumo
Flat monthly subscription by plan, with limits on number of sites, pageviews per site, and emails sent per month rather than on subscriber count. Annual billing is meaningfully cheaper than monthly. A permanently free plan exists and paid plans carry a 14-day free trial.
- Free$0
- Pro$19 annually, $25 monthly
- Plus$39 annually, $49 monthly
On price per capability BDOW! is one of the better deals in lead capture: $19 a month buys exit intent, A/B testing, branding removal, webhooks, and a full ecommerce offer layer that OptinMonster and Privy gate behind higher tiers or usage bands. The catch is the ceiling. Twenty-five thousand pageviews per site, three sites at the top, a small template library, and no personalization mean the tool stops scaling well before the price becomes the problem. Judged as a cheap, flat-priced opt-in tool for a WordPress, Showit, or small WooCommerce site, it is good value; judged as a conversion platform, it is underpowered next to the current leaders.
Editorial verdict on each
Claspo
Claspo is the clearest example in onsite capture of charging for volume instead of features, and for a small business that is the right way round. Exit intent, automated A/B testing, geo and UTM targeting, and eight gamified mechanics on a permanent free plan is more than most competitors offer at their first paid step, and the builder produces something that looks like it belongs on the site without design help. The constraint to understand before you commit is the meter: it counts every pageview on any page carrying the script, so a content-heavy site pays for reach it never converts, and passing the ceiling stops widget display quietly rather than billing you. The gaps that matter for larger buyers are real too, thin permission controls, no published security attestations, and a thirty-person bootstrapped team behind it. Judged as what it is, the best free-to-start capture tool a one-domain store or solo marketer can install this afternoon, it is hard to beat.
Read the full Claspo profileSumo
Sumo's history is more interesting than its present. It normalized the free email capture popup, made list building a default habit for a generation of bloggers, and then changed hands and names twice, arriving as BDOW! under the website builder Showit. What is left is a decent, cheap, honest tool: every form type in one dashboard, targeting rules deeper than the price suggests, one-click A/B testing and an ecommerce offer layer both included at $19 a month, and a free plan that still does real work. What is also left is a small template library that reviewers keep flagging, a 25,000 pageview per site ceiling, a three-site maximum, and a support reputation that has not recovered. Buy it if you are a creator, a WordPress or Showit site, or a small store that wants capture working this afternoon for close to nothing. Look at OptinMonster, Poptin, or a Klaviyo-native form if design control, scale, or responsive support is the thing you cannot compromise on.
Read the full Sumo profileClaspo profile last reviewed 2026-08-23; Sumo last reviewed 2026-08-23. Pricing is compiled from public sources and can change without notice. See our methodology.