ReachKit vs SEO Site Checkup

What SEO Site Checkup does better

Breadth, and by a wide margin. Its page-level audit covers more than 70 technical SEO factors against ReachKit's 8 on-page signals, and the surrounding product goes further still: a backlinks checker, site speed and outage monitoring, keyword position tracking, keyword research, a domain-level audit with its own domain score, and white-label reports for client work. It also tracks brand visibility across 6 AI engines, which is a category ReachKit only touches through a separate free tool.

The report format is easy to act on: an overall percentage score with the checks split into passed, failed and warnings, so you can see the shape of the problem before reading a word of it.

For an agency, the white-label reporting alone is a reason to be there — ReachKit has nothing equivalent, because it is built for someone auditing one product rather than twenty clients.

Where it leaves a solo founder stranded

The free tier is capped at one website check per day — the site states it plainly, right under the input. Signing up lifts that to unlimited checks with saved reports and competitor tracking, and the published plans start at $39/month for Basic, $69/month for Webmaster and $129/month for Professional, or $29, $49 and $99 per month respectively when billed yearly. That is a reasonable ladder for an agency and a steep one for a founder who wanted to re-check a title tag twice.

And 70 factors is a lot of factors. A page that fails eleven of them and warns on nine has told you almost nothing about what to do on Tuesday, because the list is ordered by category, not by consequence. Every checker in this bracket shares the limitation: it grades the page against best practice with no idea what you sell, so it cannot know that your missing structured data is worth more than your image alt text this month — or the other way round.

What ReachKit does instead

ReachKit's free on-page SEO checker at reachkit.app/tools/on-page-check needs no signup, no email and no Google account, and allows 30 checks per hour from one address instead of one per day. It returns the same 8 signals the paid scan uses — page title, meta description, heading structure, content depth, structured data, canonical URL, social share tags, and images & alt text — measured from your live HTML, with the concrete fix shown in full for every signal that fails, not blurred behind an upgrade.

Be clear about the trade: 8 is fewer than 70. ReachKit does not check page speed, uptime, backlinks or rank positions, and if what is wrong with your site is one of those, SEO Site Checkup will find it and ReachKit will not.

What the 8 buy you is a number that means something. They are combined by geometric mean with your raw search footprint — how many real queries you already rank for — into a 0–100 Discoverability Score, so the score moves on how findable you are, not on how many checkboxes you ticked. It is deterministic: same URL, same score, no language model in the path.

The paid plan then ranks the fixes into a weekly action plan, one task surfaced per day, each citing its evidence — and the next weekly scan re-measures, so a gain is attributed to the fix you shipped. It is €29.50/month, the 50% launch price, locked for life, normally €59.

Who should pick which

Pick SEO Site Checkup if you want the widest free grade of a page, if you need uptime, speed, backlink or rank tracking in the same place, or if you report to clients and need the white-label output.

Pick ReachKit if one check a day is not enough to work with, if you want to know which failing check is actually costing you traffic, or if you want the number to reflect whether people can find you rather than how many tests passed.