Blotout vs Retention.com

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

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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!"
LinkRead more reviewsRead more reviewsRead more reviews

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
Can I switch from Blotout to Littledata?

Yes, join dozens of Shopify brands who made the switch to Littledata for simpler server-side tracking, faster setup, and transparent pricing. We’ll even help migrate your Blotout setup.

Can I switch from Retention.com to Littledata?

Yes, join dozens of Shopify brands who made the switch to Littledata for simpler server-side tracking, faster setup, and transparent pricing. We’ll even help migrate your Retention.com setup.

How does Blotout work?

Blotout's EdgeTag aims to bypass the iOS restrictions on cookies to track browser events to a customer profile - even if that customer has opted out of being tracked.

Does Blotout work with Shopify?

Yes, Blotout is installed on 900 Shopify sites according to the latest stats from BuiltWith.

How does Retention.com work?

Retention Grow uses a large third-party list of email addresses to link anonymous sessions to emails given to a third party brand. This can grow your marketing audience, but at the expense of higher spam and privacy complaints.

Does Retention.com work with Shopify?

Yes, Retention.com is installed on 1,950 Shopify sites according to the latest stats from BuiltWith.

Is Blotout suitable for Enterprise brands?

Blotout is used by 1724 sites in the top 100,000 globally - so this solution is likely suitable for Enterprise scale brands.

Is Retention.com suitable for Enterprise brands?

Retention.com is used by 1406 sites in the top 100,000 globally - so this solution is likely suitable for Enterprise scale brands.

Which marketing tools does Blotout support?

Blotout supports Google Analytics, Meta Ads, Klaviyo, Google Ads and Attentive.

Which marketing tools does Retention.com support?

Retention.com supports Klaviyo.

Who owns Blotout?

Blotout is an independent private company headquartered in Fremont, California. Mandar Shinde is Blotout's CEO.

Who owns Retention.com?

Retention.com(formerly GetEmails) is an independent private company headquartered in Austin, Texas. Adam Robinson is Retention.com's CEO.

When is Blotout a better choice than Littledata?

Blotout is a better choice if you want a broader multi-vertical server-side data layer or CDP with compliance needs beyond Shopify. Littledata is the better fit for teams who want turnkey, fully managed server-side tracking without building or maintaining tag infrastructure.

When is Retention.com a better choice than Littledata?

Retention.com is a better choice if your goal is de-anonymising website traffic into contactable emails to grow owned email and SMS remarketing. Littledata is the better fit for teams who want turnkey, fully managed server-side tracking without building or maintaining tag infrastructure.

How is Littledata's tracking different from Google Tag Manager?

Littledata sends purchase and behavioural data server-to-server, directly from Shopify's servers, so it does not depend on browser tags or a Google Tag Manager container you have to maintain. Tracking keeps working when Shopify changes the checkout, and events can be enriched with customer and order data the browser never sees. Tools built on server-side Google Tag Manager still rely on browser tags to collect events, and someone has to build and maintain the container.

Do I need an implementation agency to set up Littledata?

No. Littledata is turnkey: install the Shopify app and server-side tracking is live, with no code and no Google Tag Manager required. Self-managed server-side setups typically need 10 to 40 hours of specialist configuration up front, plus a few hours a month of ongoing maintenance, which is why a low sticker price often hides a much higher true cost.

How does Littledata handle event editing?

Littledata's Event Editor lets you customise and enrich the events sent to each destination without code, so you control exactly what data reaches Google Analytics, Meta, Klaviyo and your other marketing tools.

What is Littledata's Profit signal?

Littledata's Profit signal sends true profit, not just revenue, to your ad platforms, so Meta and Google can optimise campaigns towards the orders that actually make you money.

Does Littledata protect against bot traffic?

Yes. Littledata's bot protection filters automated traffic out of your tracking, so your analytics and ad audiences are built on real customers.

Does Littledata support Shopify Markets and headless stores?

Yes. Littledata supports unlimited Shopify Markets for cross-border stores and headless and Hydrogen storefronts.

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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 August 18, 2026. Spotted something out of date? Let us know.