You're losing customers and money right now, and your tools are telling you everything is fine.
The most expensive failures don't throw an error. The app fires a success event, the number ticks up, everyone is happy, and the real thing never happened. Nobody gets paged.
You find out weeks later, when growth is mysteriously flat. By then the trail has gone cold, because the trail itself was lying.
A lying number isn't a data problem. It's a decision problem. You spend your next month fixing the wrong thing.
Picture a restaurant where the order screen marks every table “served.” The owner sees a perfect night, while customers sit at empty tables and walk out.
Zagnetism is the floor manager who actually walks the room and checks that the plate reached the table.
Your metrics say it worked. Did it?
Every popular tool measures what the browser did. Not what actually became true.
These are good tools, and Zagnetism reads from them. They just all drink from the same well: the client-side signal the app fires the instant it thinks it succeeded. None of them check that claim against your own records. Pick a journey and see the gap.
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Sentry tells you when your code broke. Zagnetism tells you when nothing broke but the number is still lying.
no error · no alert · attention goes elsewhereThe layer that connects your signals and checks them against the truth.
Your replay, analytics, and error tools each see one slice of what your app says happened. Your database knows what actually happened. Nobody reconciles the two.
Zagnetism is that layer. It reads the signals you already produce, checks every success claim against your own records, and turns the gap into one verified fix. You keep your stack. We make its numbers trustworthy.
Works with what you run. Connects to LogRocket, PostHog, Sentry, and Amplitude, plus your own database or warehouse. Nothing to rip out.
Read-only, by design. We read through read-only views you control. We never need your database keys.
Independent. The truth is a separate input, never the tool being audited. An auditor can't grade itself.
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And when there's no way to verify an outcome, we say so. “Can't be checked yet” is a real, honest answer, instead of inventing confidence. That candor is the product.
Sentry catches the loud failures. Zagnetism catches the silent ones, from the same signals.
We check each step against your own records, and give it one of three plain answers.
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The whole pitch is “you can trust this.” So the proof has to be airtight.
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Built for the person who owns the number.
You bought all the tools and still can't get a straight answer.
Product and growth owners at seed-to-Series-A teams who live and die by activation and conversion, already run LogRocket or PostHog, and have nobody whose job is to check whether those numbers are real.
Not a monitoring tool. Not pitched to on-call engineering. This is for the person who has to make the call on what's working.