Best Shopify Conversion Tracking Apps (2026)
TL;DR
All six apps in this comparison now support server-side conversion tracking (CAPI / Events API) by default — the real differences are which platforms get server-side coverage, whether it's bundled or metered, and how established each app's track record is.
Conversion tracking accuracy increasingly depends on server-side event forwarding, not just a browser pixel. Facebook's Conversions API and TikTok's Events API send the same conversion event directly from Shopify's servers, recovering data that ad blockers and browser privacy features would otherwise hide from a standard pixel.
This roundup compares six real, currently-listed Shopify apps specifically on their server-side conversion tracking capability — which platforms each covers, how pricing scales as you add more, and what their Shopify App Store review history says about reliability. All figures are verified against live App Store listings rather than each app's own marketing claims.
The ranked list
TiXel
AI-assisted server-side setup across the widest platform list of any comparable app, including Reddit.
$19.99/mo flat (no live-store free plan)
View on Shopify App Store →Best for
Stores that want server-side conversion tracking across the most platforms, including Reddit, with AI-assisted configuration.
- AI-assisted setup reduces manual server-side configuration steps
- Widest platform coverage of any app in this comparison (9, including Reddit)
- No usable free plan for live stores
Pixel Tracker
UsServer-side conversion forwarding via Facebook Conversions API and TikTok Events API, priced by how many pixels you use.
Free (1 pixel) – $29/mo (unlimited)
See Pixel Tracker →Best for
Stores that want Facebook and TikTok server-side conversion tracking specifically, without paying for platforms they don't run ads on.
- Facebook CAPI and TikTok Events API included at every paid tier
- Free plan works on live stores
- Pricing scales with pixel count instead of a flat rate
- Pre-launch — no App Store reviews yet
- Server-side coverage is currently limited to Facebook and TikTok specifically
Omega Pixel
5.0★ (158 reviews)Server-side conversion tracking for Facebook/Meta, TikTok, and Snapchat, with a perfect 5.0★ rating across 158 reviews.
$0 – $69.99/mo
View on Shopify App Store →Best for
Stores running only Facebook/Meta, TikTok, and Snapchat that want the best-reviewed server-side option for those three specifically.
- Perfect 5.0★ average across 158 reviews
- Server-side coverage across all three of its supported platforms
- No server-side coverage for Google Ads, Pinterest, LinkedIn, or X
- Top tier ($69.99/mo) is the most expensive plan in this comparison
Avantify
Server-side tracking positioned as the core product, with CAPI available from the base tier and metered add-ons for extra connections.
$5.99 – $12.99/mo + $3/mo per extra CAPI connection
View on Shopify App Store →Best for
Stores that want CAPI as the primary feature, not an add-on bundled into a broader pixel app, and are fine paying incrementally per connection.
- CAPI included from the base tier
- Lowest entry price of any paid-only app in this comparison
- No free plan
- Metered per-connection CAPI pricing can get less predictable as you add platforms
OnePixel
Server-side conversion tracking across six platforms including Microsoft/Bing Ads, priced by pixel count.
$0 – $29.90/mo
View on Shopify App Store →Best for
Stores that need server-side conversion tracking for Microsoft/Bing Ads specifically, which no other app in this comparison supports.
- Only app in this comparison with Microsoft/Bing Ads conversion tracking
- Free plan for live stores
- No LinkedIn Insight Tag support
Pixee
Server-side tracking bundled with AI ad diagnostics that flag conversion-tracking issues automatically.
$0 – $25/mo
View on Shopify App Store →Best for
Stores that want automated flagging of conversion-tracking problems, not just server-side forwarding itself.
- AI diagnostics flag conversion-tracking issues without manual auditing
- Genuine free tier
- Only covers Facebook/Meta and TikTok — no Google Ads, Snapchat, LinkedIn, or X
Side-by-side comparison
| Feature | TiXel | Pixel Tracker | Omega Pixel | Avantify | OnePixel | Pixee |
|---|---|---|---|---|---|---|
| Server-side event forwarding (CAPI / Events API) | ||||||
| AI-assisted setup or diagnostics | ||||||
| Free plan for live stores | ||||||
| Platforms with server-side coverage | 9 (incl. Reddit) | 2 (FB, TikTok) | 3 (FB, TikTok, Snap) | 5 | 6 (incl. Bing) | 2 (FB, TikTok) |
| Starting price | $19.99/mo (only tier) | $0 | $0 | $5.99/mo | $0 | $0 |
How these tools actually differ
Why server-side conversion tracking matters more than the pixel itself now
A browser-based pixel alone misses a growing share of conversions — ad blockers, Safari's Intelligent Tracking Prevention, and third-party cookie restrictions all interfere with client-side tracking before it ever fires. Server-side forwarding (Facebook's Conversions API, TikTok's Events API) sends the same conversion event directly from Shopify's servers as a backup path, which is why every app in this comparison now includes it rather than treating it as a premium add-on.
Coverage breadth varies a lot even though every app supports CAPI
Supporting "server-side tracking" doesn't mean the same thing across these six apps. TiXel forwards events server-side for nine platforms including Reddit; Pixel Tracker and Pixee currently cover Facebook and TikTok specifically. If your ad spend is concentrated on platforms outside Facebook/TikTok — Microsoft/Bing Ads, for instance — that narrows your options to OnePixel regardless of how good the other apps' CAPI implementation is.
Metered vs. flat CAPI pricing changes the real cost as you scale
Avantify charges $3/mo for each additional CAPI connection beyond the base tier, so the effective price rises with how many platforms you track server-side. TiXel, Omega Pixel, OnePixel, Pixee, and Pixel Tracker instead bundle server-side tracking into their existing pricing tiers, so adding CAPI for another platform doesn't add a separate line item.
AI-assisted setup is a real time-saver, not a marketing label, in two of these apps
TiXel markets AI-assisted configuration aimed at reducing the manual steps involved in setting up server-side event forwarding correctly. Pixee takes a related but different approach — AI diagnostics that flag tracking issues after the fact rather than assisting the initial setup. The other four apps in this list handle server-side tracking through standard manual configuration.
Review history still matters for conversion-tracking accuracy specifically
Omega Pixel's perfect 5.0★ average across 158 reviews is a meaningful signal that its server-side implementation works reliably for the merchants using it — conversion tracking is exactly the kind of feature where a silent failure (events not deduplicating correctly, or simply not arriving) is easy to miss without a track record of other merchants catching it first.
How to choose
Start with which platforms you need server-side coverage for. If it's Facebook and TikTok only, Pixel Tracker, Pixee, or Omega Pixel all cover that with a free tier available. If you need Microsoft/Bing Ads specifically, OnePixel is the only option here. If you need the broadest coverage including Reddit, TiXel is the only app that supports it.
If you want CAPI to be the primary feature rather than one part of a broader pixel app, Avantify's positioning fits that — but budget for its metered per-connection pricing if you plan to add server-side tracking for several platforms.
If you'd rather have tooling that actively flags conversion-tracking problems instead of just forwarding events and hoping they arrive correctly, Pixee's AI diagnostics or TiXel's AI-assisted setup are the two apps in this list built around that idea specifically.
Frequently Asked Questions
What is server-side conversion tracking, and how is it different from a regular pixel?
Do all Shopify conversion tracking apps support CAPI now?
Which app has the best server-side platform coverage?
Is AI-assisted conversion tracking setup actually useful, or just marketing?
Can server-side tracking alone fix inaccurate ROAS numbers?
Does Pixel Tracker support server-side tracking for Google Ads?
Pixel Tracker is in development
Join the waitlist for early access — available soon on the Shopify App Store.