Quick answer: If you are applying to fewer than 20 roles total, use a free AI chat (Claude, ChatGPT) with the job description pasted in and skip paid tools entirely. If you are running a focused search across 50+ applications for roles with similar titles, Jobscan (~£40/mo) is the only tool worth the subscription — because it ties directly into real employer ATS parsers. Teal and Resume Worded are useful free tiers; Enhancv is a formatting tool, not a matching tool.

ATS (applicant tracking system) tools are now a small industry with at least a dozen products charging £8 to £60 per month to “optimise” your CV. Most do a subset of three things: keyword matching against a job description, formatting for parser compatibility, and scoring against opaque rubrics. Not all of them are worth paying for, and none of them will compensate for applying to the wrong roles.

What an ATS actually does

The ATS is the system recruiters use to ingest applications. Popular systems in the UK and Europe include Workday, Greenhouse, Lever, Taleo, iCIMS, SmartRecruiters, and Personio. Each parses your CV into structured fields (name, experience, skills, education), stores them in a database, and lets the recruiter filter candidates by keyword, years of experience, and education.

The “75% of CVs never reach human eyes” number you see everywhere is an exaggeration — the actual figure from Jobscan's own parser-compatibility research is closer to 40-55% at high-volume employers and near zero at small ones. Your goal is not to “beat the ATS” (which implies hostility) — it is to make sure the parser extracts the right fields and that recruiter keyword searches surface you.

The six jobs-to-be-done

Parser compatibility. Your PDF or DOCX is parsed cleanly by Workday, Greenhouse, Lever, and Taleo — headers, dates, bullets all land in the right fields.
Keyword matching. Your CV contains the terms the recruiter filters by — language names, frameworks, seniority words, domains.
Readability. A human recruiter spends 6-8 seconds on the first scan. The page needs to guide their eye.
Tailoring at scale. Producing 50 tailored versions quickly, without forgetting which is which.
Job discovery. Some tools combine CV review with role recommendations.
Coverage gap analysis. Which skills does the job ask for that your CV does not show?

Tool-by-tool breakdown

Jobscan — £39-£59/mo

Best at: parser compatibility + keyword match scoring against a specific job description. Jobscan licenses real ATS parsers and its “match rate” corresponds to what a Workday/Greenhouse parser actually sees. If you are going to pay for one thing, this is the one.

Limitations: keyword-dense output can read like spam to a human reviewer — use its suggestions as a floor, not a ceiling. The subscription is month-to-month so cancel after your search ends.

Teal — free / £9/mo Pro

Best at: tracking multiple applications, storing tailored versions, AI-generated CV bullets. The Chrome extension saves job listings. Strong free tier.

Limitations: keyword matching is less rigorous than Jobscan; its scores are closer to vibes than to an actual parser.

Resume Worded — free / £15-£25/mo

Best at: rule-based CV feedback (bullets, metrics, verbs) and LinkedIn profile review. The free tier gives a meaningful report.

Limitations: not ATS-parser-backed. Feedback is heuristic and sometimes contradicts best practice (e.g., insisting on first-person verbs).

Enhancv — £14-£25/mo

Best at: design and layout. If a recruiter will look at your CV, Enhancv makes it look good.

Limitations: heavily designed templates can hurt ATS parsing (icons, sidebars, colour blocks). Use the simple templates if ATS matters.

Free AI (Claude, ChatGPT, Gemini) — £0

Best at: tailoring a CV to a single specific job. Paste your base CV and the job description, ask for a tailored version, and iterate. For low-volume searches this beats paid tools on cost and is competitive on quality.

Limitations: no parser simulation, no tracking, and you must manually check for hallucinated experience.

Decision framework

Fewer than 20 applications total: free AI + free Resume Worded report. Pay nothing.
20-100 applications, 1-2 job titles: Jobscan for one month. Tailor each CV, cancel after you accept an offer.
100+ applications or shifting multiple job titles: Jobscan + Teal Pro for tracking. Budget ~£50/mo.
Senior / executive: skip tools entirely. Senior hires are recruiter-driven, not ATS-driven. Put the money into a paid LinkedIn Premium InMail campaign instead.
Visa-sponsored roles: parser compatibility matters more because volume is high. Jobscan.

Red flags when shopping

Any tool selling a “99% success rate” — unverifiable.
Annual-only subscriptions. Your search should be short; pay monthly, cancel on offer.
Tools that auto-apply on your behalf. Quality of applications drops; most real employers disallow it.
Tools that store your CV indefinitely. Read the data-retention clause; delete after you accept an offer.

ATS CV Tooling Buyer's Guide (2026): Which Tool Should You Actually Pay For?