Feder and Fullstory: keep Fullstory, check the numbers you run on.
No, Feder is not a replacement for Fullstory. Keep Fullstory. 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 Fullstory?
No. Fullstory captures real user behavior to help companies understand and improve how humans and AI agents interact with their digital experiences. 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 Fullstory?
They do different jobs, so one does not stand in for the other. Keep Fullstory 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 Fullstory do better?
Fullstory flags rage clicks, a sign that a site or app did not respond the way a visitor expected.
In Fullstory, Inc's words:
Rage Clicks signal that your site or app didn’t react the way your customer wanted or thought it should
Rage Clicks, Error Clicks, Dead Clicks, and Thrashed Cursor | Frustration Signals, read 2026-11-12.Fullstory finds sessions where a click came right before a page error, which helps tie errors to what visitors were doing.
In Fullstory, Inc's words:
Error Clicks surface sessions with a click or tap right before a client-side JavaScript error or console error occurs.
Rage Clicks, Error Clicks, Dead Clicks, and Thrashed Cursor | Frustration Signals, read 2026-11-12.Fullstory spots clicks that do nothing on the page, so a team can find where visitors try something that does not work.
In Fullstory, Inc's words:
Dead Clicks are clicks or taps that have no effect on the page.
Rage Clicks, Error Clicks, Dead Clicks, and Thrashed Cursor | Frustration Signals, read 2026-11-12.
What can go wrong with Fullstory's numbers?
Fullstory can pause capture once an account reaches its session limit, until the next cycle, after emailing admins, so sessions from that stretch can be missing.
In Fullstory, Inc's words:
Once you've hit your session and event session limit, data capture within Fullstory will be paused until your next cycle.
What happens if I hit my session limit?, read 2026-11-12.Fullstory explains that sessions can no longer be recovered once the plan's replay retention period passes.
In Fullstory, Inc's words:
Once the Session replay retention period has passed, these sessions are permanently deleted and non-recoverable.
Why can't I locate a user's session in Fullstory?, read 2026-11-12.Fullstory notes that errors are only captured when Console Data Capture is on, so Error Clicks can be empty if it is off.
In Fullstory, Inc's words:
If Console Data Capture is disabled in your account, Fullstory will not capture errors.
Rage Clicks, Error Clicks, Dead Clicks, and Thrashed Cursor | Frustration Signals, read 2026-11-12.Fullstory explains that a visitor's blocking extension, such as Ghostery or uBlock, can stop their session from being recorded.
In Fullstory, Inc's words:
it's always possible that this user has either installed a third-party extension (such as Ghostery or uBlock)
Why can't I locate a user's session in Fullstory?, read 2026-11-12.
How does Feder work with Fullstory?
- Feder has no connection to Fullstory today, so it reads nothing from it.
- The two can run side by side: Fullstory 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 Fullstory 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 Fullstory?
- No. Keep Fullstory. Feder sits beside it.
- Does Feder send data into Fullstory?
- 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 Fullstory on this page comes from Fullstory, Inc'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.