Feder and Addingwell: keep Addingwell, check the numbers you run on.
No, Feder is not a replacement for Addingwell. Keep Addingwell. Feder does a different job beside it: it reads what your connected apps recorded and compares each number with your own history, so you know when one cannot be trusted.
Why would I need this?
Because the question is not what the number is. It is whether you can trust it.
Is Feder an alternative to Addingwell?
No. Addingwell is a server-side Google Tag Manager platform, now part of Didomi, that hosts server-side tagging so businesses can recover events that ad blockers and browser limits would otherwise lose. Feder does a different job: it watches the numbers your tools record and says when one cannot be trusted. Nothing here asks you to switch.
Do I need Feder if I have Addingwell?
They do different jobs, so one does not stand in for the other. Keep Addingwell for the job it does. Feder's job is to say when a number your tools record has gone quiet or moved outside your own history.
What does Addingwell do better?
Addingwell's server-side tagging is built to recover events that ad blockers and browser limits would otherwise lose, and to help pages load faster.
In Didomi's words:
Server-side tagging recovers the events that ad blockers and browser restrictions kill and speeds up your site while doing it.
Server Side Tagging Platform sGTM | Addingwell by Didomi, read 2026-11-12.Addingwell sends alerts and keeps error logs, so a team can see when a tag has a problem and keep its tags working.
In Didomi's words:
Real-time alerts and one-click error logs keep every tag healthy.
Server Side Tagging Platform sGTM | Addingwell by Didomi, read 2026-11-12.Addingwell guides setup step by step and keeps its documentation current, so better data can start from the first day.
In Didomi's words:
Step-by-step guided setup and always-current documentation mean you're collecting better data from day one.
Server Side Tagging Platform sGTM | Addingwell by Didomi, read 2026-11-12.
What can go wrong with Addingwell's numbers?
Addingwell explains that server-side tagging alone does not get past ad blockers, and extra setup is needed for that.
In Didomi's words:
But server-side tagging doesn’t natively bypass ad-blockers. Additional configuration is required.
Bypassing Ad-blockers with Addingwell: Complete Guide, read 2026-11-12.Addingwell says getting past ad blockers takes constant work, because blocking lists keep changing.
In Didomi's words:
Bypassing ad-blockers represents a constant watch to innovate on new techniques as blocking lists are updated.
Bypassing Ad-blockers with Addingwell: Complete Guide, read 2026-11-12.Addingwell notes that tracking can stop working with no visible sign on the website, which is why it offers alerts.
In Didomi's words:
Your tracking can stop working without any visible sign on your website.
Alerting: Monitor the Health of Your Server-Side Tracking, read 2026-11-12.
How does Feder work with Addingwell?
- Feder has no connection to Addingwell today, so it reads nothing from it.
- The two can run side by side: Addingwell keeps doing its job, and Feder checks the numbers your other tools record against your own history.
- Feder only reads. It never changes anything in a connected app.
What should I ask about my Addingwell setup?
- Which numbers on my dashboard are counted at the source, and which are modeled or estimated?
- If this number stopped counting tomorrow, who would notice, and when?
- What does a normal week look like for this number, in my own history?
Questions owners ask
- Does Feder replace Addingwell?
- No. Keep Addingwell. Feder sits beside it.
- Does Feder send data into Addingwell?
- No. Feder only reads.
- How accurate is Feder?
- We do not publish an accuracy number yet. When there is a measured one, it will be here with how it was measured.
Where do these claims come from?
Every quoted statement about Addingwell on this page comes from Didomi's own pages, quoted above with the date we read them. We read them again by 2027-05-11. If one changes, this page changes or comes down.