Go with Rezi if you're starting from a blank page and want one tool to write the resume and check its formatting for applicant tracking systems. Go with Jobscan if you already have a resume and want to tailor it to each job you apply for, with a match score and advice for that company's ATS. Both have a free plan.
Here's the question that decides it: have you got a resume you're happy with yet? If the answer's no, you need help writing one. If it's yes, you need help bending it towards each job ad. These two tools started life answering those two different questions, and that still shapes how each one works.
Short advice for busy job hunters
Pick the builder, Rezi, when you're writing from scratch or want writing and formatting checks in a single place. Pick the scanner, Jobscan, when you've got a decent draft and you're sending it to lots of different employers, because its whole approach is built around matching one resume to one posting. Neither is shown to be better overall. They answer different first questions, so the right one depends on where you are in your search.
From here on I'll mostly call them the builder and the scanner, because that's the easiest way to keep the difference in your head.
Two tools that met in the middle
It used to be simple: one wrote resumes, the other scored them. That's no longer the full story. The builder now lists a Resume Keyword Scanner and a Resume Checker. The scanner now lists an AI Resume Builder and an ATS Resume Builder that it says is free. On paper, each covers most of what the other does.
So what's left to separate them? The frame. The scanner treats everything as a match between your resume and a single job posting, including the tracking system that employer uses. The builder treats everything as a question about the document itself: is it well written, and will any ATS read it cleanly? Once you see that, the rest of the comparison falls into place.
Comparison grid
| Area | Rezi | Jobscan |
|---|---|---|
| Where you start | Builder first, with an AI Resume Agent | Scanner first: score your resume in seconds |
| What the check looks at | 23 ATS checkpoints, flags fonts, tables and headers; PDF or DOCX up to 5MB | A Match Report with a Match Rate out of 100 for one job, across five scored categories |
| ATS targeting | General ATS-compatibility guardrails | Detects the employer's ATS when you add the company or job URL |
| Job search extras | Mobile app to swipe job matches, Chrome extension to auto-fill, a Resume MCP | Application tracker, matched jobs, Auto Apply, LinkedIn optimisation |
| Interview prep | AI Interview in its job search tools | AI Interview Practice, marked New |
| Writing aids | Bullet Point Writer and Summary Generator | Bullet Point Generator and Summary Generator |
| Free plan | Yes, stated on its site | Yes, stated on its home page |
Checking the document or matching the job
This is the heart of it. The builder's checker, by its own account, runs your resume past 23 ATS checkpoints, from file type and font size through to keyword density. It flags formatting that tracking systems often trip over, such as tables and headers, and takes PDF or DOCX files up to 5MB. You'll come away knowing whether the file itself is in good shape.
The scanner works differently. You paste in a job description and get a Match Report with a Match Rate out of 100 for that specific role, split into five scored categories. Add the company name or job URL and it says its AI detects the tracking system behind the posting and tailors advice to that system's parsing rules. That's a vendor claim, but it's the clearest reason to choose it if you're applying to lots of different employers.
In short: one tells you if your resume is sound, the other tells you how well it fits this job. Both are useful. Which you need first depends on your draft.
What you get once the resume's done
Finding and applying for jobs
The builder has a mobile app where you swipe through job matches, a Chrome extension that auto-fills applications, and a Resume MCP for managing your resumes inside AI chat tools. The scanner offers an application tracker, jobs matched to your resume, an Auto Apply feature and a LinkedIn optimisation tool. If keeping your LinkedIn profile in step with your resume matters to you, the scanner covers that directly.
Writing help
Here they're almost a mirror image. Both have a bullet point tool and a summary generator, just filed under different menus. It's not a reason to pick one over the other.
Interview practice
Both list AI interview practice now. The scanner marks its version as new, and the builder puts its version among its job search tools. Neither site gives enough detail to say one is stronger, so I wouldn't let it sway you.
Where each one may let you down
- The builder's ATS checks are general guardrails, so it won't tell you about a particular employer's tracking system the way the scanner says it can.
- The scanner's score is tied to one posting, so if you haven't got a solid draft yet, you'll be scoring something that isn't ready.
- Both have grown so many tools that it's easy to sign up for one feature and wander off into five others. Know which job you're hiring the tool for.
If you'd like to see how other checkers handle this, our list of free ATS resume checkers compares several side by side.
Four more resume tools to consider
Resume.io
Best for: Templates plus a wider career toolkit; the vendor says Recruiter-AI drafts a resume in 20 minutes, with Recruiter Match and auto apply.
Want AI doing the heavy lifting in your marketing?
I build the systems that handle the boring 80 percent, so you get your week back. Done properly, with the human kept in.
Enhancv
Best for: Designed but ATS-safe resumes; the vendor says its layouts keep whole sections in columns so parsers read them in order.
Kickresume
Best for: Resume and cover letter in one place, with an ATS checker and, the vendor says, a comparison against its database of successful resumes.
Teal
Best for: Organising a whole search: a resume builder, job tracker and keyword tools, with a Chrome extension that saves jobs from over 40 job boards.
Prefer to start with an AI writer? Our guide to AI resume builders that get past ATS filters is a good next stop.
Your next move
Open your current resume. If you wince, start with the builder and get a clean, well-formatted draft. If it's decent, take the scanner to the next three job ads you want and see how your match changes as you tailor it. Plenty of people will end up using both at different stages, and that's fine, since both have a free plan to start on.
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Frequently asked questions
Does Rezi check resumes against a job description like Jobscan?
Rezi lists a Resume Keyword Scanner and a Resume Checker, but its checker is built around general ATS checkpoints. The scanner's Match Report scores your resume against one specific posting.
Can Jobscan build a resume from scratch?
Yes. It now lists an AI Resume Builder and an ATS Resume Builder that it says is free, alongside its scanner.
Which one tells me which ATS an employer uses?
The scanner says its AI detects the tracking system when you add the company or job URL, then tailors advice to it. The builder sticks to general ATS guardrails.
Which file types does the builder's checker accept?
Its checker takes PDF and DOCX files up to 5MB.
Do both help with interviews?
Yes, both list AI interview practice. Neither site gives enough detail to say which is stronger.
