Upstack Data vs Retention.com

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 Upstack Data setup.

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.

Simple, effective and unmatched first-party data solution for Server-Side tracking and Channel Attribution.

Yes, Upstack Data is installed on an unknown number of Shopify sites according to the latest stats from BuiltWith.

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.

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

Upstack Data is used by 202 sites in the top 100,000 globally - so this solution is likely suitable for Enterprise scale brands.

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

Upstack Data supports Meta Ads, TikTok, Klaviyo and Google Ads.

Retention.com supports Klaviyo.

Upstack Data(formerly Upstackify) is an independent private company headquartered in Miami. Michael Alt is Upstack Data's CEO.

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

Upstack Data is a better choice if your top priority is aggressive cross-device identity resolution and Meta Event Match Quality uplift, with event-based pricing. Littledata is the better fit for teams who want turnkey, fully managed server-side tracking without building or maintaining tag infrastructure.

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.

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.

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.

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.

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.

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

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