Stape.io vs. Addingwell: A Comparison for Server-Side GTM

About Server-Side GTM

Server-side GTM changes how data is handled. Unlike traditional client-side GTM, tags send data to your own tagging server first, and that server forwards it to vendors. That reduces the load on the user’s device and gives you more control over data collection. It is interesting for businesses focused on data security, better data collection, website performance and compliance with data protection regulations like GDPR.

Stape.io for Server-side GTM

Features: Stape.io’s main selling point is its “power-ups”: features you switch on in the dashboard instead of building them yourself. Examples are the Custom Loader (on every plan) for serving GTM scripts from your own domain, Cookie Keeper (from Pro) against Safari’s ITP, and Multi Domains (from Business).

Performance: Stape.io scales with your traffic within your plan’s request limit. From the Business plan you get multi-zone hosting, which sends each request to the nearest server zone. Stape Europe accounts have server zones in Poland, France, the Netherlands and Italy, and Stape Global accounts have 15 zones worldwide.

User Experience: Stape.io has an extensive helpdesk with documentation focused on server-side GTM. Email and chat support is available from the Pro plan, with call support and an account manager on Enterprise.

Pricing: The free plan includes up to 10,000 requests per month. Paid plans start with Pro at $20 per month ($17 billed annually) for up to 500,000 requests. Business costs $100 for up to 5 million requests and Enterprise $200 for up to 20 million. Use their pricing calculator for cost estimates: Stape Pricing Calculator.

Addingwell for Server-side GTM

Features: Addingwell is a managed server-side GTM platform from France. Since 2025 it has been part of Didomi, the consent management company. Its standout feature is monitoring: Tag Health alerts you when a tag fails, and paid plans add data monitoring, cookie monitoring and cookie restore. It also serves Google’s scripts through your own domain and gives you access to logs.

Performance: Every plan runs tagging servers with auto-scaling and a global CDN. The free plan runs in one region. Paid plans are multi-region, so your tracking keeps working if a region has problems.

User Experience: Addingwell aims at a simple setup with monitoring built in. Paid plans include a premium SLA with email support (2 business days on Pay as you go, 1 business day on Enterprise).

Pricing: The free plan includes 100,000 requests per month. Paid plans start at €90 per month and include 2,000,000 monthly requests. One custom domain is included, and extra domains cost €10 each. You can compare their plans in depth on their pricing page.

Direct Comparison and Use Cases

Addingwell suits mid-sized and larger companies that want monitoring built in, especially if they already use Didomi as their consent platform. Its free plan is also the most generous of the two, at 100,000 requests per month.

Stape.io suits most small and medium-sized businesses that want ready-made features without managing servers, and its entry price is lower ($20 against €90). Addingwell’s starting plan does include four times as many requests (2 million against 500,000), so compare on your real traffic, not on the entry price.

Conclusion

The choice between Stape.io and Addingwell depends on your traffic, budget and needs. Stape.io offers a low entry price and a wide set of power-ups. Addingwell offers strong monitoring and a close link with Didomi’s consent platform.

Both platforms run the standard Google server container, so you can move between them later if your needs change. We hope this information helps you choose the best server-side GTM solution for your business. Good luck!