Rezi is a resume builder that requires a subscription. ATSAlign is a free ATS checker. Upload your resume, paste any job description, and get your keyword match score with a full gap analysis in under 60 seconds. No account needed.
See exactly how ATSAlign compares on the features that matter most for ATS optimization.
| Feature | ATSAlign | Rezi |
|---|---|---|
| Primary Function | ATS score checker | AI resume builder |
| Free ATS Score Check | Unlimited | Not available |
| Signup Required | No | Yes |
| Job Description Matching | Yes (paste any JD) | No |
| Missing Keywords List | Free | Not available |
| AI Resume Writing | Bullet optimization only | Full resume generation |
| PDF & DOCX Support | Both | PDF export |
| Pricing Model | Pay-per-job (no subscription) | Monthly subscription |
Rezi is a well regarded AI resume builder. You start more or less from scratch inside Rezi, pick a clean template, and let its tools help you write and format a resume, with a scan against a couple of dozen ATS checkpoints along the way. It is a solid product if what you want is to build a new resume from the ground up.
ATSAlign comes at it from the other direction. You already have a resume, maybe in Word, maybe exported from another builder, and you just want to know whether it will pass for a specific job. You upload it, paste the job description, and get your match and the missing keywords. No rebuilding, no template lock in, no starting over.
Rezi's free plan lets you build one resume with basic AI and a few PDF downloads, but the deeper tools sit on the Pro plan at twenty nine dollars a month, with a lifetime option for a larger one time fee. That is fair for a full builder you will use again and again. If you only need to pressure test the resume you already wrote, paying a monthly builder fee is more than the job calls for. ATSAlign keeps the ATS check free and charges only for the optional AI rewrite, once, with no subscription.
Honestly, these two play well together. Build a clean base resume in Rezi or anywhere else, then run it through ATSAlign against each job you apply to, since the keywords change from posting to posting. A builder gets you a tidy document. A checker makes sure that document actually matches the role. Doing both is the closest thing to a reliable way past the filter.
If you are starting over and want guided help writing every line, a builder like Rezi earns its place. If your resume is basically done and you are applying to real jobs this week, you want the fast, free, job specific check, and that is what ATSAlign is for. Pick by where you are in the process, not by which tool is louder.
The entire process takes under 2 minutes and gives you a clear, actionable report.
Upload your DOCX or PDF resume. Our parser extracts your content exactly as an ATS would.
Add the job description you are targeting. We analyze keyword alignment, skills, and structure.
Receive an instant ATS score with a list of missing keywords and exactly what to fix.
ATSAlign tells you exactly what to fix — not just whether you passed or failed.
See the exact keywords from the job description that are missing in your resume — by name, not just by count.
Understand your ATS score across skills, experience, and formatting — not just one opaque number.
Once you know what is missing, let AI rewrite your bullet points to naturally include them. No fabrication — only what you actually did.
Most resume checkers give you vague feedback. ATSAlign shows you exactly what enterprise ATS platforms look for — keyword frequency, skills alignment, and formatting compatibility — and maps your resume against those factors precisely.
Try It FreeUpload your resume and paste any job description. Get your ATS score, missing keywords, and a step-by-step fix list in under a minute.