Can you trust the numbers in TheirStack?

TheirStack is a data service that shows which companies use which technologies and which companies are hiring, from job postings it tracks. Its own help pages give 4 reasons its numbers can look different from what you expect. The first to rule out: Today's count of new job postings can look low and then rise, because TheirStack keeps finding jobs over the following days, as its docs explain.

What does TheirStack keep track of?

  • TheirStack keeps a list of job postings, each with the company, place, date and where it was found.

    In TheirStack's own words: Each row shows job title, company, location, date posted, salary (when available), remote status, and source. Job Search, read 2026-11-12.

  • TheirStack keeps a record of the credits an account has used.

    In TheirStack's own words: The usage page shows where your credits went. Usage, read 2026-11-12.

What can make TheirStack's numbers look wrong?

  1. Today's count of new job postings can look low and then rise, because TheirStack keeps finding jobs over the following days, as its docs explain.

    In TheirStack's own words: Because discovery continues over subsequent days, job counts for today may appear lower than final numbers. Freshness, read 2026-11-12.

  2. TheirStack's job counts can be lower than another provider's for the same search, because, as its docs say, it removes duplicates more strictly.

    In TheirStack's own words: We deduplicate aggressively, so we count fewer postings than providers who don't. Sources and coverage, read 2026-11-12.

  3. Two parts of TheirStack's usage page can show different totals for the same dates, as its docs explain.

    In TheirStack's own words: Because of that, the credits chart and the requests or webhooks sections can show different totals for the same period. Usage, read 2026-11-12.

  4. A search can show fewer jobs than expected if the default filter is left on, because TheirStack starts with the last 15 days in your own country, as its docs say.

    In TheirStack's own words: By default, it returns jobs posted in the last 15 days in your country. Job Search, read 2026-11-12.

How do I check TheirStack's numbers myself?

  1. An owner can open the usage page to see how many credits have been used.

    In TheirStack's own words: You can view your credit usage by going to the usage page. Credits, read 2026-11-12.

  2. An owner can follow a credit total on TheirStack's usage page down to the requests or webhook events behind it.

    In TheirStack's own words: The sections below it take any of those numbers down to the requests or webhook events that produced them. Usage, read 2026-11-12.

How does TheirStack work with Feder?

Connect TheirStack to Feder and it joins your Interest apps. Feder only reads. It never changes anything in TheirStack.

When you connect TheirStack, Feder checks the connection straight away and shows Connected only when that check passes. If a reading cannot be taken later, Feder shows it as not read, never as zero.

Other apps that feed Interest

Questions owners ask about TheirStack

See every connection.

Where do these answers come from?

Everything this page says about TheirStack comes from TheirStack's own pages, quoted above with the date we read them. Last reviewed 2026-11-12. We read them again by 2027-11-12. If one changes, this page changes or comes down.

Know the day a number breaks, not the month after.

Some numbers are too quiet to judge daily, such as a form filled in a few times a week. Until there is enough of your own history to judge a change, Feder says it is still learning and scores nothing, rather than guessing.