Feder and Cometly: keep Cometly, check the numbers you run on.
No, Feder is not a replacement for Cometly. Keep Cometly. 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 Cometly?
No. Cometly is marketing attribution software that ties ad performance to conversions and revenue, and returns attribution data to ad platforms. 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 Cometly?
They do different jobs, so one does not stand in for the other. Keep Cometly 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 Cometly do better?
Cometly sends its attribution data back to the ad platforms, to help their ads perform better.
In Cometly's words:
Get better ad results by sending accurate attribution data back to the ad platforms.
Cometly | Marketing Attribution Software, read 2026-11-12.Cometly credits sales to the ads people actually clicked, which gives a click-based view of ad results.
In Cometly's words:
Cometly, on the other hand, provides Click-Through Attribution, focusing solely on users who actively engaged with your ad.
Cometly Attribution Data Different from Meta Conversions In Meta Ads Manager, read 2026-11-12.Cometly shows new conversion events soon after they happen, usually within about a quarter of an hour.
In Cometly's words:
Typically, it takes 15 minutes to process the data.
Cometly Data Update Frequency: How Long Does It Take?, read 2026-11-12.
What can go wrong with Cometly's numbers?
Cometly explains that its conversion counts can be lower than Meta's own, because Meta also counts people who only viewed an ad.
In Cometly's words:
It’s not uncommon to see higher conversion counts in Meta due to its inclusion of View-Through Conversions.
Cometly Attribution Data Different from Meta Conversions In Meta Ads Manager, read 2026-11-12.Cometly says a small share of events can show with no known source, for reasons such as VPNs or technical limits, and that good setup keeps that share down.
In Cometly's words:
Seeing 5-10% of events labeled as 'No Source' is normal due to factors like complex VPNs or technical limitations.
Understanding 'No Source' in Cometly Reporting, read 2026-11-12.Cometly explains that if its pixel is missing from any page where conversions happen, those conversions can be credited wrongly.
In Cometly's words:
If the pixel isn’t installed on all pages where conversions occur, Cometly cannot attribute events correctly.
Understanding 'No Source' in Cometly Reporting, read 2026-11-12.
How does Feder work with Cometly?
- Feder has no connection to Cometly today, so it reads nothing from it.
- The two can run side by side: Cometly 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 Cometly 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 Cometly?
- No. Keep Cometly. Feder sits beside it.
- Does Feder send data into Cometly?
- 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 Cometly on this page comes from Cometly'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.