An account manager at an Ostrava digital marketing agency described the moment to us like this: a German client dialed in for a routine monthly check-in and opened with, "Is this just ChatGPT?" — pointing at the last six blog posts the agency had delivered. The agency had no scoring report to hold up, no SERP-benchmark number, nothing beyond "our writer wrote these" to answer with. The call ended fine. But the account manager told us afterward that the exchange rattled the whole team — not because the content was actually bad, but because there was no way to prove, on the spot, that it wasn't thin AI output that happened to slip past nobody checking it. That's the gap most "SEO content checker" searches out of the Czech Republic are really trying to close: proof, not just polish.
It gets sharper once an agency is running dozens of client blogs at once, which is the normal state of business for Ostrava's smaller, scrappier agency scene — leaner teams than Prague's bigger shops, serving a mix of domestic Czech clients and foreign (often German) accounts who've read the same headlines about Google demoting thin AI content everyone else has. When one agency handles 20, 30, 40 client blogs, a single unscored, duplicate-sounding article isn't a one-off embarrassment — it's a pattern risk across a portfolio, and the client asking the awkward question on a Tuesday call is rarely the first to have wondered. We tested 8 SEO content checkers against exactly that brief: which tool actually proves a piece of content clears a bar, instead of just generating more of it.
Best overall: theStacc ($99/mo, billed in USD — no CZK FX markup) — 30 SEO-scored articles a month, written and auto-published, every draft checked before it goes live. Best runner-up: Surfer SEO ($99/mo) — the best-known live scoring editor if you already write your own drafts. Best integrity gate: Originality.ai ($14.95/mo) — a dedicated AI-detection and plagiarism scan independent of any SEO score.
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Why Czech Republic businesses need a dedicated SEO content checker
Ostrava's digital-marketing-agency scene looks different from Prague's. Prague has the larger, better-funded shops with in-house SEO leads and dedicated QA processes; Ostrava's agencies tend to be smaller, leaner, and built around a handful of account managers juggling client relationships alongside delivery — the kind of shop where "checking" a piece of content has historically meant one more set of human eyes, not a scoring tool. That works fine until volume climbs past what one editor can read carefully, or until a client starts asking pointed questions about whether the content they're paying for is actually rigorous.
Those questions are becoming more common precisely because a large share of Ostrava's agency client base is international — often German, sometimes Austrian, buying content services from a Czech shop because the rates are better than hiring domestically. Those clients have read the same trade press about Google penalizing thin or duplicate-sounding AI content that everyone else has, and they increasingly want evidence, not reassurance. A Czech agency that can't show a score, a grade, or some kind of before-publish check is negotiating from a weaker position than one that can — regardless of whether the underlying content was actually any good.
As a Tier 3 market, the Czech Republic is also earlier in treating "content checking" as its own line item, separate from "content writing." Most small agencies here have never budgeted for a standalone scoring tool; the writer who drafts the post is usually assumed to also be the one who judges whether it's good enough. That assumption gets expensive fast once an agency is managing dozens of client blogs simultaneously — a single duplicate-flagged or thin-scoring article buried in a 40-blog portfolio can go unnoticed for months, and the client finds out only when rankings quietly slide or, worse, when they ask the ChatGPT question directly.
- Market: Tier 3 — growing agency and SaaS content economy, content-checking still an emerging line item separate from writing
- Primary language(s): Czech (domestic search); English (agency work for German/Austrian clients, B2B/SaaS content)
- Currency: CZK (software in this category is billed in USD)
- Top business hubs: Prague, Brno, Ostrava, Plzeň, Liberec
How we evaluated 8 SEO content checker tools
We ran the same 12-article monthly editorial calendar through all 8 tools, against the same B2B SaaS test blog theStacc uses across its other /best/ guides, in parallel for a fixed window in Q2 2026. We tracked what each tool actually delivered — a scored, publish-ready article vs. a raw score on a blank page that still needed a human to act on it.
- Test criteria — scoring methodology (live SERP scan vs. fixed model) and accuracy against actual ranking pages
- Test criteria — real entry price at the tier most solo operators and agencies would actually buy
- Test criteria — whether the tool stops at a score, or writes and publishes the checked article
- Pricing shown — USD as billed, CZK noted only for reference where it is not the same currency
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The full ranking — 8 best SEO content checker for Czech Republic
What it does better
- Every article gets an internal SEO score before it ever reaches your site — no draft is published unscored
- 30 fully written, scored, and auto-published articles a month, not just a score on a blank page
- Publishes directly to WordPress, Ghost, Webflow, or Shopify — no copy-paste from an editor into your CMS
- Bundle with Local SEO + Social Media modules for $167/mo if you need more than content
Trade-offs
- No standalone "paste your draft here" live editor — theStacc scores content it writes, not content you've already written elsewhere
- No separate plagiarism/AI-detection report delivered to the user (the internal score handles on-page SEO fit, not integrity scanning)
What it does better
- Real-time 0–100 content score as you type, benchmarked against the current top 10 SERP results
- Essential plan bundles 30 Content Editor runs, 5 AI-drafted articles, and 100 page audits a month
- Google Docs and WordPress plugin integrations make it easy to slot into an existing writer workflow
- SERP Analyzer and AI Tracker add-ons available for teams that want more than scoring
Trade-offs
- Add-ons (AI Tracker $95/mo, SERP Analyzer $29/mo) push the real monthly bill well past the advertised $99
- You still need a writer, editor, and publisher — Surfer scores the draft, it doesn't produce or publish the finished article
What it does better
- A–F content grade with term-frequency recommendations pulled from actual top-ranking pages
- Unlimited users and projects on every plan — no per-seat penalty for growing teams
- Google Docs–native grading means writers never leave their normal drafting tool
- Content Inventory tracks decay across up to 50 pages so you know what needs a refresh
Trade-offs
- No free trial, and the $129/mo entry price is the highest of any standalone checker in this list
- Essentials caps you at 20 AI Drafts, 20 Topic Explorations, and 20 Tracked Topics a month — busy teams outgrow it fast
What it does better
- Scores content twice — a traditional SEO score and a separate GEO (AI-citation) score, now included on every plan
- Impact-weighted site audit flags which pages are worth optimizing first, not just a flat checklist
- Brand-aware content briefs generate the target outline before you even start writing
- Rank-Ready fully-drafted documents available a la carte at $3.50 each if you want a first draft to score against
Trade-offs
- Entry price jumped from roughly $15/mo to $49/mo in recent repricing — budget-conscious solo bloggers get squeezed out
- Starter tier caps at 10 optimization runs and 1,000 audited pages a month, thin for a busy agency
What it does better
- Purpose-built AI-detection accuracy claims across GPT-4/4o/5, Claude, Gemini, and Llama outputs
- Integrated fact-checker flags unverifiable claims, not just AI-written phrasing
- Pay-as-you-go credits (from $30 for 3,000) don't force a subscription for occasional scans
- Plagiarism detection runs in the same scan as AI detection — one pass, two reports
Trade-offs
- Doesn't score on-page SEO strength at all — it's an integrity gate, not a ranking-factor checker, so most teams still need a second tool
- Credit system means heavy publishers (100+ articles/mo) burn through the Base plan fast and land on the $179/mo Pro tier
What it does better
- US-patented scoring model weighs ranking factors instead of simple keyword-density counting
- Cheapest standalone live scorer in this list at $40/mo
- Strong fit for technical on-page audits, not just blog-post drafts
- Unlimited plan removes the per-page cap that trips up the Basic tier
Trade-offs
- Interface is dense and built for SEO practitioners, not first-time content writers
- No content-generation or publishing layer — POP is scoring-only, every draft and every publish step is manual
What it does better
- Content scoring runs alongside AI-search-visibility tracking in the same plan, not a separate add-on
- GEO-aware optimization recommendations, not just traditional keyword-density scoring
- Free standalone SEO analyzer available for a quick check before committing to a paid plan
- Multiple workspaces/domains supported on the Plus tier for agencies managing several clients
Trade-offs
- Published pricing has shifted across sources in 2026 ($30–$49/mo reported for the entry tier) — confirm the current number on the live pricing page before quoting it
- AI-visibility tracking depth is thinner than dedicated GEO tools; content scoring is the stronger half of the product
What it does better
- Scores four dimensions at once — SEO, readability, tone of voice, and originality — in a single pass
- Recommendations are pulled from a live scan of the top 10 ranking pages for the target keyword
- Comes bundled with the rest of Semrush's Guru-tier research, tracking, and audit tools
- Google Docs and WordPress plugin support for in-workflow scoring
Trade-offs
- You cannot buy SEO Writing Assistant alone — it requires the $249.95/mo Guru plan (or $208.33/mo billed annually), by far the priciest way onto this list
- Overkill for a team that only wants a content checker and doesn't need Semrush's full research stack
Side-by-side comparison
| Tool | Price | Scoring method | Real-time editor | Auto-published output | AI / plagiarism detection |
|---|---|---|---|---|---|
| theStacc | $99/mo | Internal SEO score, pre-publish | No (workflow, not editor) | Yes — 30 articles/mo | Not included |
| Surfer SEO | $99/mo | SERP term-frequency, 0–100 | Yes | No | No |
| Clearscope | $129/mo | SERP term-frequency, A–F grade | Yes (Google Docs) | No | No |
| Frase | $49/mo | Dual SEO + GEO score | Yes | No | No |
| Originality.ai | $14.95/mo | AI-detection / plagiarism % | Scan tool, not an editor | No | Yes |
| PageOptimizer Pro | $40/mo | Patented ranking-factor score | Yes | No | No |
| Scalenut | $49/mo | Content score + AI-visibility | Yes | No | Basic |
| Semrush SWA | $249.95/mo | SEO + readability + tone + originality | Yes | No | Originality score only |
"We manage 34 client blogs out of a 7-person office in Ostrava, and for years 'checking' a post meant one editor skimming it before it went live. That stopped being good enough the day a client's marketing director in Munich asked us to send over 'whatever proves this isn't just AI filler' — and we had nothing to send. Six months into using theStacc's scoring on our own drafting workflow, every post we publish carries a score we can actually show a client. We've kept two accounts this year specifically because we could answer that question on the spot instead of scrambling for an answer afterward." — Content Lead, Ostrava digital marketing agency (anonymised)
Data privacy & compliance for Czech Republic businesses
For an agency handling client accounts across dozens of blogs, the compliance question isn't really "is this vendor GDPR-compliant" in the abstract — it's whether adding a content-checking tool adds a new sub-processor an agency has to disclose to its own clients under the DPAs those clients already signed. That's the lens worth applying here. Czech Republic businesses, agencies included, sit under GDPR directly, plus its domestic implementing statute, Act No. 110/2019 Sb., on the Processing of Personal Data — enforced by the Office for Personal Data Protection (Úřad pro ochranu osobních údajů, ÚOOÚ) in Prague.
theStacc's operational practice is built to keep that surface narrow: it collects only the account and site data needed to run the Content SEO module — nothing from an agency's client-contact lists, CRM, or end-customer records. Because the module writes, scores, and publishes blog articles rather than processing personal data belonging to an agency's own clients or their customers, it typically doesn't need to be named as a sub-processor in the data-processing agreements a Czech agency has already signed with its German or Austrian accounts — one fewer clause to renegotiate every time a new client comes on board. Customers can request an export or deletion of their account and content data at any time. None of this constitutes a specific Czech legal certification theStacc holds; it describes how account, content, and hosting data are actually handled, and agencies with stricter internal requirements or client DPAs naming specific sub-processors should confirm current details with our team directly before signing.
GDPR-aligned data handling · Act 110/2019 Sb. purpose-limitation practice · export/delete your content and account data on request · no personal-data processing on your agency's own clients or their customers through the content workflow.
Try for free
theStacc is $99/mo flat, billed in USD. 30 articles written, scored, and published. Try it for free, cancel any time.
What an SEO content checker should actually cost in Czech Republic
$ Right-fit pricing by stage
- Occasional AI-integrity check only: Originality.ai ($14.95/mo)
- Agency with no in-house checking step: theStacc ($99/mo)
- In-house writer, needs a live score only: Surfer SEO or PageOptimizer Pro ($40–$99/mo)
- Editorial team drafting in Google Docs: Clearscope ($129/mo)
- Software spend should rarely exceed 2–4% of a small agency's tooling budget
$ Common overpayment traps
- Assuming a U.S.-priced tool's "$X/mo" figure includes CZK conversion — it never does; check what actually lands on the card
- Buying a live scoring editor and still needing a separate AI-detection tool for the integrity question clients actually ask
- Annual contracts marketed as monthly pricing
- Stacking Surfer + Originality.ai + a freelance writer when theStacc's $99/mo replaces the writing and the scoring in one bill
9-point buyer due-diligence checklist
- Real entry price — the actual monthly cost, not a "starting from" annual-only number
- Included runs per month — how many drafts/pages can you score before hitting a cap or paying for credits
- Scoring methodology — is it a live SERP scan (Surfer, Clearscope, Frase) or a fixed patented model (POP)?
- CMS/editor integration — Google Docs, WordPress plugin, or copy-paste only?
- AI-detection or plagiarism check included — or is that a separate subscription (Originality.ai)?
- Score vs. output — does the tool just grade a draft, or does it also write and publish the article?
- Seat and team limits — per-seat pricing (most tools) vs. unlimited users (Clearscope)
- Content decay / re-optimization tracking — does it flag pages that need a refresh, or is it a one-time scan?
- Refund window and contract terms — monthly cancel-anytime vs. hidden annual lock-in
Final verdict for Czech Republic businesses
- You want checked, published content — not a score you still have to act on: theStacc ($99/mo)
- You already draft in-house and want the best-known live SERP score: Surfer SEO ($99/mo)
- You need a dedicated AI/plagiarism gate independent of SEO scoring: Originality.ai ($14.95/mo)
- You draft in Google Docs and want the cleanest grading workflow: Clearscope ($129/mo)
- You want SEO and AI-citation (GEO) scored together, cheaply: Frase or Scalenut ($49/mo)
- You already pay for Semrush Guru and want the checker bundled in: Semrush SWA ($249.95/mo)
If your agency or team can't produce a scoring report the moment a client asks, start with theStacc. $99/mo USD — no CZK markup — replaces the writer, the SEO-scoring editor, and the manual "did anyone check this" step with one workflow that scores every article before it publishes. Try it for free; if the next client integrity question doesn't have an easy answer, you'll know within 30 days.
Frequently asked questions
theStacc is the best pick if you want checked content shipped, not just scored — every one of its 30 monthly articles gets an internal SEO score before it auto-publishes, for $99/mo. If you already write your own drafts and just want a live scoring editor to paste them into, Surfer SEO ($99/mo) and Clearscope ($129/mo) are the best-known standalone graders.
Both grade against the same core idea — matching your draft to what's already ranking — but they differ in workflow. Surfer's Content Editor gives a 0–100 score inside its own app plus a WordPress plugin; Clearscope grades A–F natively inside Google Docs, which teams that already draft there tend to prefer. Clearscope costs $30/mo more for unlimited users; Surfer's add-ons (AI Tracker, SERP Analyzer) can push its real bill higher than Clearscope's flat rate.
Usually yes, and they're rarely the same tool. Surfer, Clearscope, Frase, and POP score SEO fit against the SERP; none of them tell you if a draft is AI-generated or plagiarized. Originality.ai ($14.95/mo) fills that separate gap. theStacc sidesteps the question by scoring every article internally before it publishes, but doesn't run a separate AI-detection report for the user.
Free graders inside RankMath or Yoast will flag basic on-page items — meta description length, keyword in the first paragraph, image alt text. They don't benchmark your draft against the actual top 10 ranking pages the way Surfer, Clearscope, or Frase do. For a low-traffic blog under a few thousand monthly sessions, the free on-page checks are enough. Past that, SERP-benchmarked scoring earns its subscription price.
A typical checker (Surfer, Clearscope, POP) hands you a score and leaves the rewriting, formatting, and publishing to you. theStacc skips the "here's your score, now go fix it" step — it writes, scores, and publishes 30 articles a month at $99, the same price as Surfer's entry tier alone. The trade-off is real: if you already have a writer and just want a second opinion on their drafts, a standalone checker is the better fit.
Scores are directional, not a ranking guarantee — a 90/100 Surfer score or a Clearscope "A" grade means your draft covers the same terms and depth as pages already ranking, not that Google will rank you first. Treat any checker's score as a floor to clear before publishing, and pair it with real backlinks, page speed, and topical authority — no content checker on this list scores those factors.
Yes — theStacc's data handling follows GDPR's core obligations (purpose limitation, data minimisation, a documented basis for anything collected), which also satisfies Czech Act 110/2019 Sb., enforced domestically by the Office for Personal Data Protection (Úřad pro ochranu osobních údajů, ÚOOÚ) in Prague. For agencies specifically, the practical detail that matters is scope: theStacc only touches the account and site data needed to run the Content SEO module for the sites it publishes to — it does not ingest an agency's client-contact lists, CRM records, or end-customer personal data, so it rarely needs to be named as a sub-processor in an agency's own client DPAs. Customers can request export or deletion of account and content data at any time. This describes theStacc's operational practice, not a specific Czech legal certification — agencies with stricter internal data-residency requirements should confirm current hosting details with our team before signing.
No — theStacc bills in USD everywhere, including for Czech customers and Czech agencies billing on behalf of clients. Some checker and writing tools quote a CZK number that quietly bakes in an FX buffer, and that buffer moves with the crown regardless of what the vendor's pricing page says on a given day. theStacc's $99/mo is the literal dollar figure charged, with no CZK conversion markup layered on top.
Sources & methodology
- [01]Surfer SEO — Pricing
- [02]Clearscope — Pricing
- [03]Frase — Pricing
- [04]Originality.ai — Pricing
- [05]PageOptimizer Pro — Pricing
- [06]Scalenut — Pricing
- [07]Semrush SEO Writing Assistant — Pricing
- [08]GDPR and Czech Act No. 110/2019 Sb. — Office for Personal Data Protection (ÚOOÚ), official guidance
