What a server-side tracking app should do
Every tool on this list sends your purchases to ad platforms from a server, next to the browser pixel. That's the baseline. The differences are in the details that decide whether those server events actually match buyers:
- Save the ad click id (fbclid, ttclid, gclid and so on) when the visitor lands, and keep it until they buy.
- Send hashed email and phone with every purchase.
- Use the same event id as the browser pixel, so purchases aren't counted twice.
- Send only paid orders, and retry when a platform's API fails.
- Show you, per order, what was sent where.
The main trade-offs
Flexibility vs simplicity. Stape is the most flexible and very cheap at the infrastructure level, but a full server-side Google Tag Manager setup needs someone who knows tags and containers. Settl, WeTracked, TrackBee and Tracklution are plug-and-play: paste ids and tokens and you're running.
Flat price vs usage-based. Settl charges one flat monthly price. Elevar, Littledata and Analyzify price by orders, TrackBee by tracked revenue, Tracklution and Stape by events or requests. Usage pricing can be cheaper for small stores and more expensive as you grow, so run your own numbers.
Shopify-only vs Shopify and WooCommerce. TrackBee, Elevar's core tiers, Littledata and Analyzify focus on Shopify. Settl, WeTracked, Tracklution, RedTrack and Stape also cover WooCommerce.
Where the others are stronger than Settl
Being fair means saying it. Tracklution connects to more ad platforms, including LinkedIn, Taboola and Outbrain, and TrackBee offers 19 integrations on every plan; Settl covers Meta, TikTok, Google (GA4 and Google Ads), Snapchat, Pinterest, X, Microsoft Ads and Reddit, plus Klaviyo. WeTracked supports many third-party checkouts, and includes up to 3 stores on its starter plan. Elevar and Analyzify offer expert-led setup and deep GA4 work. Littledata's pay-per-order plan has no monthly minimum. RedTrack and Tracklution have free tiers, and Stape has a free plan with 10K requests.
If one of those is exactly what you need, it may be the better choice. A store that also advertises on LinkedIn, Taboola or Outbrain, or that runs a dozen stores on different checkouts, has needs Settl doesn't cover today. That's fine to say; picking the wrong tool costs more than a month's subscription.
Where Settl fits
Settl is built for Shopify and WooCommerce stores that run paid ads on Meta, TikTok, Google (GA4 and Google Ads), Snapchat, Pinterest, X, Microsoft Ads and Reddit, and want it to just work. One line in the theme or a WordPress plugin, the ad click kept 90 days, every paid order sent server-side with hashed details and a shared event id, automatic retries, and an hourly health check that e-mails you when something breaks.
On top of tracking, the dashboard shows spend, sales and ROAS per ad from your connected Meta, TikTok, Google Ads, Snapchat and Pinterest accounts, with advice on which ads to scale or switch off, plus a live map of visitors. It's one flat price with no per-order fees, monthly, cancel any time. Shopify keeps its own checkout.
How to test the best server-side tracking app for your store
Most tools on this list have a free plan, a trial or a cheap first month, so the best server-side tracking app for you is the one that proves itself on your own orders. Run the test for at least a week.
Before you start, write down last week's numbers: paid orders in your store and purchases reported by each ad platform. Then switch off any other server source for the same pixels, so you're not measuring two tools at once.
During the test, place one order yourself with an ad blocker on, and one that you pay in another browser after clicking an ad on your phone. Check that both arrive in each platform's events manager, marked as server events and not duplicated. At the end of the week, compare reported purchases with your real orders again. The gap that's left, and how easy it was to get there, tells you more than any feature list.
How to choose in five questions
- Which ad platforms do you actually spend on? Make sure each is covered server-side.
- Shopify, WooCommerce or both?
- Who sets it up: you, or someone who knows Google Tag Manager?
- How does the price grow with your orders or revenue over the next year?
- Do you need ROAS per ad in the same tool, or do you have analytics elsewhere?