The SE Ranking free trial runs 14 days and the pricing page states "No credit card required" directly under the signup button on both of its plans. The Semrush free trial runs 7 days and asks for a card. That is the entire difference in one line, and it matters more than any feature table, because the two trials fail in opposite directions. If you forget about the Semrush trial, you are charged. If you forget about the SE Ranking trial, you lose access. One default costs money and the other costs nothing, and most people evaluating SEO software are busy enough that the default is what actually happens.
Both figures were read off the vendors' own pricing pages in August 2026. If you want the whole field rather than these two, every trial in the category is laid out side by side on the keyword research tool free trial page, including the one major tool that offers no trial at all.
Semrush free trial vs SE Ranking free trial at a glance
| Semrush | SE Ranking | |
|---|---|---|
| Trial length | 7 days | 14 days |
| Credit card | Required | Not required, and the page says so |
| What happens at the end | The first payment is charged automatically unless you cancel first | Access stops |
| How many times you can take it | Once per account. Later attempts start a paid monthly plan | Not published as a hard one time limit |
| Plans the trial button appears on | SEO, Starter and Pro+. The Advanced plan says Subscribe instead | Core and Growth, both |
| Price when it converts | $139/mo for SEO, $117.33 billed annually | $129/mo for Core, $103.20 billed annually |
| Keywords tracked | 500 daily on SEO and Starter | 2,000 daily on Core |
| Projects | 5 websites to monitor on SEO | 10 projects on Core |
The seven day clock is shorter than it sounds
Seven calendar days is five working days, and Semrush is an enormous platform. Keyword Magic Tool, Position Tracking, Site Audit, the content tools, the AI visibility dashboards. Nobody evaluates that properly in five afternoons while also doing their job. The trial is genuinely full access, which is to Semrush's credit, but breadth works against you here: the more there is to look at, the more likely you are to spend the week browsing and end it with an impression rather than a decision.
Semrush also documents that the trial can be used only once per account, and that every later attempt starts a paid monthly plan instead. That is worth reading twice. If someone at your company took the trial two years ago on a project nobody remembers, the free week is already spent. Check before you plan around it.
Fourteen days without a card changes how you evaluate
SE Ranking's Core plan runs $129 a month, or $103.20 billed annually, and the trial covers the full plan for two weeks. Two weeks is long enough to run a real client project through the tool, which is the only evaluation that tells you anything. It is also long enough to hit the second week, when the novelty has worn off and you find out whether you actually reach for the thing.
The no card part is not a small courtesy. It removes the deadline pressure that makes people either rush a decision or subscribe by accident, and it means the vendor is betting on the product rather than on your inattention. Among the major SEO platforms this is now unusual enough to be a genuine differentiator, and SE Ranking prints it under both plan buttons rather than burying it in the terms.
What you get for the two weeks is 10 projects, 2,000 keywords tracked daily, 250,000 pages a month in audit and 25,000 API credits. Against the Semrush SEO plan at $139, that is twice the sites and four times the daily tracked keywords for ten dollars less. Semrush answers with a larger index, a deeper competitive research suite and the brand recognition that makes it easier to sell to a client. Both of those are real. The full plan by plan numbers are on Semrush pricing and SE Ranking pricing.
Export is the thing to test on day one
The single most useful hour of any SEO tool trial is the first one, and it should be spent trying to get data out rather than looking at data on screen. Export format, row limits and whether the export includes the columns you actually need are the things that decide whether the tool fits your workflow, and they are also the things you will discover at the worst possible moment if you leave them until the final day.
This is not a hypothetical concern in this category. Ahrefs, which runs no trial at all, sells a $29 Starter plan that lists export rows per month as None, so its cheapest tier lets you read 250 rows per report and take away zero of them. Semrush meters the free tier at 10 results in the interface and 0 in export. Vendors treat export as the paid boundary far more often than they treat the data itself that way, so verify it early on whichever trial you start.
How to decide inside the window
Bring ten keywords you are already trying to rank for, including the awkward long tail ones, and run them through both tools. Generic seed terms make every platform look competent. Then pull the same terms out of Search Console and compare. Every vendor estimates search volume and every vendor is wrong in a different direction, so what you are testing is not accuracy in the abstract but whether this particular tool is wrong in a way you can work around. That comparison is worked through properly in how accurate is keyword search volume.
Then do one complete job end to end inside the tool. One page, from the first seed keyword to a finished brief you would hand to a writer. The friction that decides whether you renew never appears in a feature list. It appears in the handoffs, when you realize the clustering step is manual, or the export drops the column the brief needs, or you are back in a spreadsheet stitching two screens together.
Set a calendar reminder for day five of a seven day trial and day ten of a fourteen day one, not for the final day. If the trial takes a card, that reminder is the difference between a decision and a charge, and a forgotten SEO subscription is exactly the kind of line item that quietly survives for a year because nobody owns it. Teams that have felt that once tend to start tracking what every recurring software subscription actually costs before the next trial, which is a cheaper habit than the alternative.
So which trial should you start
Start SE Ranking first, for one practical reason: it costs you nothing to begin and nothing to abandon, so it can run in the background while you decide whether you even want to spend your single Semrush trial. Fourteen days of Core will tell you whether a mid tier platform covers what you need, and if it does, you have saved both the money and the one shot.
Start Semrush first if you already know you are buying Semrush and you are only choosing a tier, or if you need something specific that only Semrush has, such as the competitive research depth or the historical data. In that case block two real afternoons before you click the button, because you get one attempt and five working days.
And if what you are actually short of is not data but a plan, neither trial solves that. Both tools return keyword lists and leave the grouping, the intent sorting and the running order to you. That gap is what the keyword clustering tool and the SEO content plan pages exist to close, and you can run a seed keyword through the demo at the top of this page without a trial, an account or a card.
Put it into practice
The fastest way to apply this article: run your own niche through the free Keywordpilot demo. One seed keyword, twenty seconds, a clustered mini content plan. No account.