The literature review workspace where every citation is real.

Revio runs your whole systematic review in one place: screening with two reviewers and Cohen's kappa, AI extraction, risk of bias, PRISMA, and a Word manuscript. And its one unbreakable rule: every quote is verified word for word against the source article, so invented citations never survive.

No card needed. Your PDFs never leave your computer.

Verified, p. 4 word-for-word match
The problem with AI research tools: they write fluent summaries with citations that sometimes do not exist. In a systematic review, one invented quote can sink the whole paper.
Revio's answer: the extraction engine must show the exact sentence and page for every claim, and each quote is checked character by character against your PDF. If the words are not in the article, the quote does not enter your evidence.

Your entire review, eight steps, one workspace

From the raw database export to the submitted manuscript, without juggling a screener here, a spreadsheet there, and a writing tool somewhere else.

1Import Reference lists as RIS, BibTeX, or a spreadsheet; article PDFs; your question set as a Word file.
2Screen Two reviewers decide titles and abstracts independently; conflicts surface, Cohen's kappa is computed for the paper.
3Process The AI reads each included PDF against every question and extracts page-anchored quotes, each verified word for word.
4Ask Free questions across the evidence, or exhaustive re-reads of every full text, with citations.
5Review A human approves, edits, or rejects every drafted answer; each decision carries a name and a timestamp.
6Bias RoB 2 and JBI checklists with AI prefill and the traffic-light figure journals expect.
7Analyze The PRISMA 2020 diagram fills itself from your screening; charts export at print resolution.
8Write A structured Word report, a flowing manuscript draft, references in APA or Vancouver, and Excel and RIS exports.

Built for reviews that must survive peer review

Six things Revio does that make the difference between a fast draft and a defensible one.

Evidence verified word for word

Every extracted quote is matched character by character against the source PDF and stamped with its page. What you cite is what the paper says, provably.

Dual screening with Cohen's kappa

Independent decisions, a conflicts desk, exclusion reasons, and the agreement statistic your methods section asks for, computed as you work.

Risk of bias, explained

RoB 2 and JBI with plain-language guidance on every domain, AI-prefilled suggestions you confirm, and the traffic-light figure ready for the manuscript.

PRISMA that fills itself

The PRISMA 2020 flow builds from your actual screening counts and exports at print resolution, along with every chart on the analytics page.

From evidence to manuscript

Approved answers assemble into a structured report or a flowing draft, with front matter, limitations that name their sources, and references in APA 7 or Vancouver. Arabic translation built in.

Your PDFs stay yours

Articles are read in your browser and never uploaded to a server. Teams sync decisions and notes through the cloud; the documents themselves travel only in files you share.

Honest pricing, on the page

Credits meter the AI: a question or a drafted answer uses 10, processing a full article uses 20 to 60 by length. Everything else, screening, reviewing, exports, and team sync, is unmetered on every plan.

Free trial

Free
no card needed

250 credits to run Revio end to end on 2 articles and 2 questions.

Create your account

Pro monthly

$39
per month

5,000 credits every month for one researcher. Cancel any time.

Start with the trial
Best value

Pro yearly

$348
per year, $29 per month equivalent

The same 5,000 monthly credits, billed once a year. Save 26% next to monthly.

Start with the trial

Lab

$29
per seat monthly, or $290 yearly

One shared pool of 5,000 credits per seat for the whole team, one payer, an invite code for colleagues. Minimum 2 seats.

Create your account

Ran low in a heavy month? A $5 top-up adds 1,000 credits that never expire. For comparison: one Covidence license costs about $240 per year for a single review and only screens; the same money in Revio is a yearly seat that screens, appraises, extracts, and writes, for every review you run.

Questions researchers ask first

Where are my PDFs stored?

On your computer, and nowhere else. Revio reads them in your browser; the only things that ever touch a server are the AI requests and, if you turn on team sync, the small collaborative layer: decisions, notes, and edited answers. Articles and evidence travel in a project file you keep and share yourself.

What exactly is a credit?

A unit of AI work, priced by size on the server: asking a question or drafting one answer uses 10, a risk of bias prefill or an audit uses 20, and processing a full article uses 20 to 60 depending on its length. Failed calls refund themselves. Screening, reviewing, analytics, and every export cost nothing.

How do teams work?

One person starts a Lab plan and shares its invite code; everyone's AI use draws from one pooled balance. Teammates load the same project file and flip on Live sync, and from then on decisions, notes, screening calls, and bias judgments merge in real time, newest wins, every conflict listed.

What does the free trial include?

The complete product, capped at 2 articles, 2 questions, and 250 credits: enough to import, screen, process, verify quotes, appraise bias, see your PRISMA, and export a Word report before paying anything.

Can I cancel or change plans?

Any time, from Manage billing inside the app; payments run through Stripe and Revio never sees your card. Yearly plans simply run out their term. Top-up credits never expire, even with no subscription.

Talk to the person who built it

Questions, lab pricing beyond 20 seats, or a walkthrough for your research group: write directly.

Ashkanani@saaah.co