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

Fueled is a new tool for collecting and organizing 1st-party eCommerce customer data across the sales and marketing tools you love. Shopify, BigCommerce, Yotpo, Gorgias...We capture data from all of these channels, so that you can use it wherever and how ever you want.
| Feature | Retention.com | Fueled | Littledata |
|---|---|---|---|
| Customer data to marketing platforms | ✔️ | ✔️ | ✔️ |
| Identity resolution to boost audiences | ✔️ | ✔️ | |
| Works with platforms other than Shopify | ✔️ | ✔️ | |
| Direct from Shopify's servers | ✔️ | ✔️ | |
| Founder owned and led | ✔️ | ✔️ | |
| 30 day free trial | ✔️ | ||
| Fully automatic, no code setup | ✔️ | ||
| Natively supports Shopify Markets | ✔️ | ||
| Automatic tracking of checkout steps | ✔️ |
Retention.com focuses narrowly on identity resolution to recover anonymous shoppers and boost Klaviyo flows — strong for email recovery, but limited in broader data infrastructure.
Fueled offers flexible 1st-party data collection across multiple platforms (Shopify, BigCommerce, Yotpo, Gorgias), making it a solid multi-tool option for data routing.
Neither pulls data directly from Shopify's servers. This is a critical gap — browser-based tracking misses server-side events, incomplete checkout data, and customer enrichment that only server-side capture provides.
Littledata wins because:
For a Shopify Plus brand prioritizing data accuracy and completeness, Littledata's server-side foundation makes it the superior choice.
| Retention.com | Fueled | Littledata | |
|---|---|---|---|
| Example product review | "It's disheartening to hear about the app developer's refusal to enable enhanced conversion tracking without additional charges... It almost seems like price gouging for Shopify merchants to compensate for losses from the BigCommerce side." | "We were having difficulties with accurate and consistent revenue attribution...With Littledata implemented, we now get consistent and accurate revenue attribution." | |
| Example support review | "Unfortunately, the team... very high employee turnover; it can be really frustrating to have to re-explain things to new reps." | "Customer support is non-existent, and responses take forever... very frustrating experience overall." | "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 | Retention.com | Fueled | Littledata |
|---|---|---|---|
| 50 orders / month | $500 | $189 | $39 |
| 500 orders / month | $500 | $349 | $199 |
| 5,000 orders / month | $2000 | $879 | $449 |
| 20,000 orders / month | $5000 | $2000 | $1390 |
For 50 orders per month, Retention.com is 1,200% more expensive than Littledata, while Fueled is 384% more. At 500 orders, Retention.com and Fueled are equal, but Retention.com is 236% more than Littledata. For 5,000 orders, Retention.com is 136% more than Fueled and 472% more than Littledata. At 20,000 orders, Retention.com is 150% more than Fueled and 527% more than Littledata. Overall, Retention.com consistently has the highest pricing across all order volumes.
| Destination | Retention.com | Fueled | Littledata |
|---|---|---|---|
| Klaviyo | ✔️ | ✔️ | |
| Google Analytics | ✔️ | ✔️ | |
| Segment | ✔️ | ✔️ | |
| Meta Ads | ✔️ | ✔️ | |
| Google Ads | ✔️ | ✔️ | |
| TikTok | ✔️ | ||
| ✔️ | |||
| Attentive | ✔️ | ||
| Microsoft Ads | ✔️ |
Retention.com is laser-focused on identity resolution and email/SMS retargeting — Klaviyo is its destination because its core value is identifying anonymous visitors and pushing them into retention flows, not broad analytics.
Fueled targets a mixed analytics + paid media stack (GA, Segment, Meta, Google Ads), emphasizing clean data pipelines and measurement infrastructure.
Littledata offers the broadest destination coverage across analytics, paid media, and owned marketing channels (including TikTok, Pinterest, Attentive, Microsoft Ads), positioning itself as an all-in-one server-side tracking layer for Shopify.
Bottom line: Retention.com = identity/retention focus; Fueled = analytics/paid media infrastructure; Littledata = widest multi-channel coverage for brands wanting one solution across acquisition and retention channels.
