Both Elevar and Popsixle offer server-side tracking direct from Shopify's servers with identity resolution to boost ad platform audiences — similar core capabilities. However, Elevar has been acquired by Buxton/Audiense and folded into a broader analytics platform, meaning it's no longer a focused conversion tracking tool, which introduces product risk. Popsixle is founder-owned and focused primarily on Meta (Facebook/Instagram), limiting its channel breadth.

Where Littledata wins:

• 30-day free trial — neither competitor offers this, lowering your commitment risk
• Fully automatic, no-code setup — Elevar requires Google Tag Manager configuration; Littledata is plug-and-play
• Natively supports Shopify Markets — critical for international ecommerce, not offered by either
• Automatic checkout step tracking — no manual event setup required
• Broader platform support — not limited to Meta like Popsixle

Littledata matches both on server-side tracking and identity resolution, while being easier to implement, more future-proof, and better suited to scaling Shopify Plus brands.

For 50 orders, Elevar is 111% more expensive than Popsixle and 413% more than Littledata. At 500 orders, Elevar and Popsixle are equal, while Littledata is 25% cheaper than both. For 5000 orders, Elevar is 23% cheaper than Popsixle but 29% more expensive than Littledata. At 20000 orders, Elevar is 22% cheaper than Popsixle and 6% more expensive than Littledata. Overall, Elevar tends to be the most expensive, while Littledata offers the lowest prices across most order volumes.

Elevar and Littledata offer broad multi-channel server-side tracking across GA4, Meta, TikTok, Pinterest, Google Ads, Microsoft Ads, Klaviyo, and Attentive — covering your full marketing and retention stack.

Popsixle is narrowly focused, supporting only Meta Ads as a server-side destination. It's essentially a Meta CAPI specialist tool, not a comprehensive tracking solution.

If you need server-side coverage across all your channels, Elevar or Littledata are the practical choices. The key differentiator between those two is that Littledata natively supports Segment as a destination, while Elevar does not — useful if you're routing data through a CDP.