Pricing

Every price, on one page.

You pay once, through Stripe, for the thing you use. There is no account to make, and the only subscription is an optional one in Vitae.

Manuscript checks

Pay per use

Each is one payment for one run on one document. The upload link is emailed with the receipt, so you can pay on a phone and upload on a laptop.

Paper Review $9
Four AI reviewers read the manuscript: methods, statistics, data integrity and the editor's view. Every reference is checked against CrossRef, and the anonymity scan is included.
Paper Review with Journal Pack $11
The same review plus a check against the submission rules of one of 25 journals and conferences.
Paper Review, Deep $15
Two rounds: each reviewer sees the others' findings and sharpens its own. Journal Pack included; takes 10 to 15 minutes.
Response to Reviewers $6
Reads your response letter against each reviewer comment and flags missing, vague or defensive replies.
Resume Review $5
An ATS screen, a hiring manager and a recruiter read your resume and say what would hold it back.
Citation Gap Analysis $3
Prior work your manuscript should cite and does not.
Anonymity Check $2
Names, institutions, funders and self-citations that would break double-blind review.
Cover Letter $2
A draft cover letter from your abstract and the target journal.
Revision Review $2
After a Paper Review: checks whether the revised manuscript addressed each finding.

For labs and repeat use

Paper Review volume packs

Standard review tokens, bought in bulk. Each token is one review with the anonymity scan included. Buying for a lab or department.

5 Paper Reviews $38
About $7.60 a review. Tokens are emailed at purchase and never expire.
20 Paper Reviews $150
About $7.50 a review. Hand one to each student as their paper is ready.

Apps

Mac apps and a Chrome extension

ModernTex for Mac $10 onceafter a free 7-day trial
A native LaTeX editor with synced PDF preview, citation completion and submission checks. Every 1.x update included.
Vitae for Mac FreePlus: $3 a month, $24 a year
Submissions, grants, projects and your CV in one local-first app. Optional Plus adds reports, Word templates and the revision workspace.
Scholar Utility Belt Free
A Chrome extension that adds journal rankings, h-index and retraction alerts to Google Scholar.

Free

Free, with no sign-up

Eighteen in-browser tools for LaTeX, BibTeX, citations and file conversion, which never store your files; LaTeX templates for common venues; a response letter template; the submission checklist; and the guides.

Questions about paying

Is anything a subscription?

No, apart from Vitae Plus, which is optional. The manuscript checks are paid per use, ModernTex is $10 once after a free 7-day trial, and volume-pack tokens never expire.

Do I need an account?

No. You pay on Stripe's checkout page, and the receipt email carries everything you need: the link to start a paid check, your pack tokens, or your ModernTex download and license key.

What if a review is not useful?

Email ben@purplelink.llc within 14 days of the purchase and the amount you paid for that review is refunded to the original payment method, as the Terms describe.

Can a lab or department pay by invoice?

Yes. Volume packs bring Paper Review to about $7.50 a review, and the page for labs covers invoices, purchase orders and data handling.

I paid but lost the link. What now?

Use Find a purchase: enter the address you paid with, and the links, tokens or license key are emailed to it again.