10 Best Conversions API Tools for Founders [2026 Updated]

1. Meta Conversions API Gateway

• Type: Free
• URL: https://www.facebook.com/business/tools/conversions-api
• Overview: Meta's official Conversions API lets advertisers send web, app, and offline events directly from their servers to Meta. The Conversions API Gateway option offers a no-code, hosted setup that improves ad measurement and optimization with minimal developer work.

2. Stape

• Type: Paid
• URL: https://stape.io
• Overview: Stape provides hosted server-side Google Tag Manager containers and a Conversions API gateway for Meta and other ad platforms. It offers affordable plans and ready-made tags that help marketers recover data lost to ad blockers and browser restrictions.

3. Elevar

• Type: Paid
• URL: https://www.getelevar.com
• Overview: Elevar is a server-side tracking and data layer solution built for Shopify stores. It sends accurate conversion events to Meta Conversions API, Google, TikTok, and other platforms to improve attribution and ROAS.

4. Littledata

• Type: Paid
• URL: https://www.littledata.io
• Overview: Littledata is a Shopify-focused tracking app that automates server-side event tracking to analytics and ad platforms, including Meta Conversions API. It helps ecommerce brands maintain reliable conversion data with simple, no-code connections.

5. Segment

• Type: Paid
• URL: https://segment.com
• Overview: Segment, from Twilio, is a customer data platform that collects events once and routes them to destinations such as Facebook Conversions API and Google Ads. Its server-side delivery and identity tools give larger teams consistent, governed conversion data.

6. RudderStack

• Type: Paid
• URL: https://www.rudderstack.com
• Overview: RudderStack is a warehouse-first customer data platform with server-side event streaming to advertising destinations like Meta Conversions API. It suits data-driven teams that want control over their pipelines and a free tier to start.

7. Google Tag Manager Server-Side

• Type: Free
• URL: https://developers.google.com/tag-platform/tag-manager/server-side
• Overview: Server-side tagging in Google Tag Manager lets marketers run tags in a cloud server container instead of the browser. It supports sending events to Meta Conversions API and other platforms, though hosting costs apply for the cloud infrastructure.

8. Zapier

• Type: Paid
• URL: https://zapier.com
• Overview: Zapier is a no-code automation platform that connects thousands of apps and includes Facebook Conversions integration. Marketers can send leads, purchases, and CRM events to Meta as conversion events without writing code, with a limited free plan available.

9. Hyros

• Type: Paid
• URL: https://hyros.com
• Overview: Hyros is an ad tracking and attribution platform that uses server-side tracking to send enriched conversion data back to ad platforms such as Meta and Google. It targets high-spend advertisers who want better attribution and optimization signals.

10. Customer.io

• Type: Paid
• URL: https://customer.io
• Overview: Customer.io is a messaging and automation platform that can send events to ad platforms through integrations and data pipelines. Teams can use it to pass lifecycle conversions to Meta's Conversions API and sync audiences for retargeting.