Addingwell is a fully-managed GTM server-side hosting + tooling (monitoring, adblocker bypass, Safari resilience) to improve data quality, performance and governance.

Retention.com's identity resolution software helps Shopify merchants recover lost shoppers and increase Klaviyo flow revenue.
| Feature | Addingwell | Retention.com | Littledata |
|---|---|---|---|
| Server-side tracking | ✔️ | ✔️ | |
| Works with platforms other than Shopify | ✔️ | ✔️ | |
| Identity resolution to boost audiences | ✔️ | ✔️ | |
| Customer data to marketing platforms | ✔️ | ✔️ | |
| 30 day free trial | ✔️ | ||
| Founder owned and led | ✔️ | ||
| Fully automatic, no code setup | ✔️ | ||
| Automatic tracking of checkout steps | ✔️ | ||
| No-code setup for Shopify Hydrogen | ✔️ |
Addingwell focuses on server-side tracking and data quality improvements, making it suitable for various platforms. Retention.com emphasizes identity resolution to recover lost shoppers and enhance marketing revenue. Littledata combines the strengths of both, offering server-side tracking and identity resolution while providing a fully automatic, no-code setup and a 30-day free trial. Additionally, Littledata's automatic tracking of checkout steps gives it an edge in simplifying data collection and enhancing user experience compared to both Addingwell and Retention.com.
| Addingwell | Retention.com | Littledata | |
|---|---|---|---|
| Example product review | Setup took just a few seconds, and it works right away. All my pixels from GTM are now server-side and perfectly connected. So much money saved on ads. | "We were having difficulties with accurate and consistent revenue attribution...With Littledata implemented, we now get consistent and accurate revenue attribution." | |
| Example support review | The support was very fast to answer our questions and super helpful. Just be careful to check that the events don't trigger twice. | "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!" |
| Link | Read more reviews |
| Store size | Addingwell | Retention.com | Littledata |
|---|---|---|---|
| 50 orders / month | $90 | $500 | $39 |
| 500 orders / month | $90 | $500 | $199 |
| 5,000 orders / month | $130 | $2000 | $449 |
| 20,000 orders / month | $400 | $5000 | $1390 |
For an online store with 50 orders, Addingwell is 82% cheaper than Retention.com and 56% more expensive than Littledata. At 500 orders, Addingwell and Retention.com are equal in price, while Littledata is 65% more expensive than Addingwell. With 5000 orders, Addingwell is 93% cheaper than Retention.com and 63% cheaper than Littledata. At 20000 orders, Addingwell is 92% cheaper than Retention.com and 50% cheaper than Littledata. Overall, Addingwell consistently offers the lowest pricing across all order volumes.
| Destination | Addingwell | Retention.com | Littledata |
|---|---|---|---|
| Google Analytics | ✔️ | ✔️ | |
| Meta Ads | ✔️ | ✔️ | |
| TikTok | ✔️ | ✔️ | |
| Google Ads | ✔️ | ✔️ | |
| ✔️ | ✔️ | ||
| Klaviyo | ✔️ | ✔️ | |
| Snap | ✔️ | ||
| Segment | ✔️ | ||
| Attentive | ✔️ |
Addingwell focuses on integrating with major advertising platforms like Google Analytics, Meta Ads, TikTok, Google Ads, and Pinterest, enabling streamlined ad performance tracking and optimization. Retention.com, on the other hand, specializes in email marketing through Klaviyo, emphasizing customer retention and engagement. Littledata offers a broader range of integrations, including both advertising platforms and email marketing tools like Klaviyo, along with Segment and Attentive, providing a more comprehensive view of customer interactions across various channels. This allows for enhanced data analysis and marketing strategy development.
