Blotout vs Retention.com

Blotout is better for Shopify brands: broader platform support, server-side data, lower cost.

Blotout logo

What is Blotout?

Blotout restores your marketing signals in the post-cookie world. Your returning customers are showing up as anonymous and Blotout aims to identify them.

Retention.com logo

What is Retention.com?

Retention.com's identity resolution software helps Shopify merchants recover lost shoppers and increase Klaviyo flow revenue.

Blotout vs Retention.com comparison

FeatureBlotoutRetention.comLittledata
Identity resolution to boost audiences✔️✔️✔️
Customer data to marketing platforms✔️✔️✔️
Direct from Shopify's servers✔️minus✔️
Works with platforms other than Shopify✔️✔️minus
Founder owned and led✔️minus✔️
30 day free trialminusminus✔️
Fully automatic, no code setupminusminus✔️
Natively supports Shopify Marketsminusminus✔️
Automatic tracking of checkout stepsminusminus✔️
Built For Shopifyminusminus✔️

Both Blotout and Retention.com focus on identity resolution to recover anonymous visitors and boost marketing audiences, with Retention.com specifically targeting Klaviyo flow revenue for Shopify merchants. Blotout differentiates itself with server-side data collection direct from Shopify and broader multi-platform support, while Retention.com lacks this server-side capability.

Where Littledata wins over both:

Retention.com lacks "Direct from Shopify's servers," limiting its ability to enrich events with customer data or capture events the browser doesn't see — Google Tag Manager-style approaches miss critical parts of the customer journey. Blotout does pull direct from Shopify's servers, so Littledata's edge there is narrower.

However, Littledata uniquely offers:

  • 30-day free trial — lower risk to evaluate
  • Fully automatic, no-code setup — faster time to value
  • Native Shopify Markets support — critical for international scaling
  • Automatic checkout step tracking — deeper funnel visibility out of the box

Reviews comparison

Blotout vs Retention.com's customer reviews

BlotoutRetention.comLittledata
Example product review"After using Blotout for a couple months, we decided to drop them... Blotout was taking credit for a lot of Klaviyo pixel events that would’ve happened anyway... Event match quality in Facebook was marginally better, but I don’t think it warrants the cost or complexity.""We were having difficulties with accurate and consistent revenue attribution...With Littledata implemented, we now get consistent and accurate revenue attribution."
Example support review"It took weeks to get a reply regarding a refund... it seems they grew too fast to keep up with customer service.""Unfortunately, the team... very high employee turnover; it can be really frustrating to have to re-explain things to new reps.""Customer support is absolutely amazing... you can never go wrong when an app does what it says and tacks on great service!"
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Cost comparison

Blotout vs Retention.com's monthly subscription cost

Store sizeBlotoutRetention.comLittledata
50 orders / month$79$500$39
500 orders / month$400$500$175
5,000 orders / month$1980$2000$540
20,000 orders / month$5000$5000$1390

Sources: Blotout pricing, Littledata pricing. Prices last verified July 22, 2026.

Supported data destinations

DestinationBlotoutRetention.comLittledata
Klaviyo✔️✔️✔️
Google Analytics✔️minus✔️
Meta Ads✔️minus✔️
Google Ads✔️minus✔️
Attentive✔️minus✔️
TikTokminusminus✔️
Pinterestminusminus✔️
Segmentminusminus✔️
Microsoft Adsminusminus✔️

Blotout offers a mid-range destination set covering core ad platforms and email/SMS, balancing paid acquisition with retention channels.

Retention.com is heavily focused on identity resolution and list-building, with Klaviyo as its primary destination — making it a retention/email-first tool rather than a full tracking suite.

Littledata provides the broadest destination coverage, adding TikTok, Pinterest, Microsoft Ads, and Segment on top of what Blotout offers. The Segment integration is particularly notable, as it acts as a data hub enabling connections to hundreds of downstream tools — giving Littledata a significant scalability advantage for brands with complex martech stacks.

Bottom line: Littledata wins on breadth; Retention.com is narrowly specialized; Blotout sits in between.

Klaviyo comparison

Blotout vs Retention.com's solution for Klaviyo

FeatureBlotoutRetention.comLittledata
Identity resolution
Never adds emails to your list without consent✔️minus✔️
Uses other marketing channel cookies to boost identityminusminus✔️
Backstitches Klaviyo profile onto previous customer eventsminusminus✔️
Klaviyo Preferred Partnerminusminus✔️
Viewed Product trigger
Backwards compatible with Klaviyo templatesminus✔️✔️
Tracked client-side✔️minusminus
Tracked server-sideminusminus✔️
Enriched product info (e.g. category)minusminus✔️
Added to Cart trigger
Unreliable tracking of button clicks✔️✔️minus
Backwards compatible with Klaviyo templatesminus✔️✔️
Direct from Shopify serversminusminus✔️
Enriched product info (e.g. category)minusminus✔️
Target the whole contents of the cartminusminus✔️
Checkout Started trigger
Tracked via the checkout page✔️✔️minus
Backwards compatible with Klaviyo templatesminus✔️✔️
Direct from Shopify serversminusminus✔️

How Littledata tracks Klaviyo for Shopify →

Benefits of Littledata

Littledata has been trusted by leading Shopify brands since 2017 for reliable server-side tracking.
100% of revenue tracked
Enhanced identity resolution
Connectors for all popular marketing channels
Learn more
Benefits of Littledata

Comparing Blotout against Retention.com

How we compiled this comparison: pricing and feature data comes from each vendor's public pricing page, Shopify App Store listings, and BuiltWith usage data, reviewed by the Littledata team. Last verified October 3, 2026. Spotted something out of date? Let us know.