Which half it does. Ask the tool a question it was not built for and watch it fail. A tracker can't tell you who you know at a company. A network search can't tell you which stage your application is at. Buying one and expecting both is the common mistake in this category.
How the record gets created. Three ways: you type it, a browser extension logs it when you submit, or it comes from accounts you already have. Simplify does the second, autofilling across Greenhouse, Workday, Lever, LinkedIn EasyApply and Indeed and tracking each submission. Happenstance covers the third of those. Everything else is typing.
What free means here. Free plans are common in job search tools and rare in CRMs, which is the one thing this category gets right. Huntr is free up to 100 jobs. Simplify says its core features are free forever and it charges employers instead. Happenstance is free and the free plan is the whole product, with usage limits on chat and on web searches beyond your network.
What it's worth after you get the job. A tracker is worth nothing the day the search ends, which is fine if it cost nothing. The network you connected is worth something for years, because the next search, the next hire you make and the next introduction you need all run through the same people.