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

Say goodbye to siloed and inaccurate data that is slowing you down. Centralize your analytics, sales and marketing platform data, enabling faster, data-driven decisions.
| Feature | Blotout | Upstack Data | Littledata |
|---|---|---|---|
| Identity resolution to boost audiences | ✔️ | ✔️ | ✔️ |
| Direct from Shopify's servers | ✔️ | ✔️ | ✔️ |
| Customer data to marketing platforms | ✔️ | ✔️ | ✔️ |
| Founder owned and led | ✔️ | ✔️ | ✔️ |
| 30 day free trial | ✔️ | ✔️ | |
| Fully automatic, no code setup | ✔️ | ✔️ | |
| Works with platforms other than Shopify | ✔️ | ||
| Marketing reporting | ✔️ | ||
| Proprietary attribution model | ✔️ | ||
| Natively supports Shopify Markets | ✔️ | ||
| Automatic tracking of checkout steps | ✔️ |
Blotout vs Upstack Data vs Littledata
Blotout focuses on identity resolution and restoring post-cookie marketing signals — useful if anonymous visitor identification is your core pain point. However, it lacks a free trial, no-code setup, and marketing reporting, making it harder to evaluate quickly or use without technical resources.
Upstack Data offers broader analytics and attribution reporting with a no-code setup and free trial, making it more accessible. However, it lacks native Shopify Markets support and automatic checkout tracking.
Where Littledata wins over both: Both competitors miss key Shopify-specific capabilities that Littledata covers natively:
For a Shopify Plus brand needing accurate, complete customer journey data with minimal setup, Littledata is the strongest fit.
| Blotout | Upstack Data | Littledata | |
|---|---|---|---|
| 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." | "After testing a number of platforms...absolutely no regrets. Michael has a truly deep technical knowledge...Event Quality Match scores in meta increase, adding reliable NC purchase, NC CPA and NC ROAS metrics in ad manager is massively helpful as we're very focused on optimizing for NC..." | "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." | "Support is second to none... any issues we've had Michael has arranged a call immediately to diagnose the issue." | "Customer support is absolutely amazing... you can never go wrong when an app does what it says and tacks on great service!" |
| Link | Read more reviews |
| Store size | Blotout | Upstack Data | Littledata |
|---|---|---|---|
| 50 orders / month | $79 | $299 | $39 |
| 500 orders / month | $400 | $299 | $199 |
| 5,000 orders / month | $1980 | $599 | $449 |
| 20,000 orders / month | $5000 | $999 | $1390 |
For 50 orders, Blotout is 102% more expensive than Littledata, while Upstack Data is 666% more expensive than Littledata. At 500 orders, Blotout and Upstack Data are equal, but Blotout is 168% more than Littledata. For 5000 orders, Blotout is 468% more than Littledata, while Upstack Data is 71% more expensive. At 20000 orders, Blotout is 525% more than Littledata, and Upstack Data is 25% more expensive than Littledata.
| Destination | Blotout | Upstack Data | Littledata |
|---|---|---|---|
| Meta Ads | ✔️ | ✔️ | ✔️ |
| Klaviyo | ✔️ | ✔️ | ✔️ |
| Google Ads | ✔️ | ✔️ | ✔️ |
| Google Analytics | ✔️ | ✔️ | |
| Attentive | ✔️ | ✔️ | |
| TikTok | ✔️ | ✔️ | |
| ✔️ | |||
| Segment | ✔️ | ||
| Microsoft Ads | ✔️ |
Littledata offers the broadest destination coverage (9), including Pinterest, Microsoft Ads, and Segment — useful if you need multi-channel reach or a CDP layer.
Blotout uniquely includes Attentive among its 5 destinations, matching Littledata there, but lacks TikTok.
Upstack Data has the narrowest set (4 destinations), covering only the core paid social and email channels — no Attentive, no Pinterest, no Segment, no Microsoft Ads.
Key differentiator: If TikTok is a priority, eliminate Blotout. If you need Segment passthrough or Pinterest, only Littledata qualifies. If Attentive SMS tracking matters, Blotout and Littledata are your only options.
| Feature | Blotout | Upstack Data | Littledata |
|---|---|---|---|
| Identity resolution | |||
| Never adds new emails to your marketing list | ✔️ | ✔️ | ✔️ |
| Docs on how an end-user can opt out for GDPR / CCPA | ✔️ | ||
| Uses other marketing channel cookies to boost identity | ✔️ | ||
| Backstitches Klaviyo profile onto previous customer events | ✔️ | ||
| Direct from Shopify's servers | ✔️ | ||
| Viewed Product trigger | |||
| Tracked client-side | ✔️ | ✔️ | |
| Tracked server-side | ✔️ | ||
| Enriched product info (e.g. category) | ✔️ | ||
| Backwards compatible with Klaviyo templates | ✔️ | ||
| Added to Cart trigger | |||
| Unreliable tracking of button clicks | ✔️ | ✔️ | |
| Reliable via Shopify's servers | ✔️ | ||
| Enriched product info (e.g. category) | ✔️ | ||
| Backwards compatible with Klaviyo templates | ✔️ | ||
| Target the whole contents of the cart | ✔️ | ||
| Checkout Started trigger | |||
| Tracked via the checkout page | ✔️ | ✔️ | |
| Direct from Shopify's servers | ✔️ | ||
| Backwards compatible with Klaviyo templates | ✔️ | ||
Littledata pulls data directly from Shopify's servers, giving it a critical edge over both Blotout and Upstack Data.
Without server-side Shopify data, both alternatives suffer:
Littledata solves this while adding unique advantages neither competitor offers:
For a Shopify Plus brand prioritizing clean data and maximum customer identification in Klaviyo, Littledata's server-side foundation makes it the strongest choice.
| Feature | Blotout | Upstack Data | Littledata |
|---|---|---|---|
| Google Ads Conversions | |||
| Real-time tracking of Enhanced Conversions | ✔️ | ✔️ | |
| Fully automatic setup | ✔️ | ✔️ | |
| Unreliable tracking via thank you page | ✔️ | ||
| Tracked direct from Shopify's servers | ✔️ | ||
| New vs Returning customer conversions | ✔️ | ||
| Feature | Blotout | Upstack Data | Littledata |
|---|---|---|---|
| Key benefits | |||
| Boost to Event Match Quality Score | ✔️ | ✔️ | ✔️ |
| 100% accurate revenue in Meta | ✔️ | ✔️ | |
| Pre-purchase audiences based on first-party data | ✔️ | ||
| Target subscriptions vs one-time purchases | ✔️ | ||
| Fully automatic setup | ✔️ | ||
| AddToCart | |||
| Via Conversions API | ✔️ | ||
| InitiateCheckout | |||
| Via Conversions API | ✔️ | ||
| Includes all checkout steps | ✔️ | ||
| Purchase | |||
| Via Conversions API | ✔️ | ✔️ | ✔️ |
| Includes post-purchase upsells | ✔️ | ||
| Includes recurring orders | ✔️ | ||
| Filters to exclude orders from some channels | ✔️ | ||
| New vs Returning customer conversions | ✔️ | ||
