Now in early access

Bias screening for systematic reviews — automated.

BiasLens reads your paper, detects the study design, selects the right tool (RoB 2, ROBINS-I, QUADAS-2, and more), and delivers a full domain-by-domain assessment in under 60 seconds.

No credit card. No spam. 3 months free for founding users.

biaslens.app
BIAS ASSESSMENT · RoB 2
Effect of nerve repair scaffold on functional recovery: a randomized controlled trial
⚠ Some concerns — Overall
Randomization process Low risk
Deviations from interventions Some concerns
Missing outcome data Low risk
Measurement of outcome Low risk
Reported result selection Some concerns
6
bias tools
supported
<60s
per paper
assessed
30+
papers
per batch
100%
domain-level
rationales
Features

Everything your systematic review workflow needs

Manual bias assessment takes hours. BiasLens handles the heavy lifting so you can focus on your findings.

⚡
Auto tool selection
Paste or upload any paper. BiasLens detects the study design and picks the right tool — RoB 2 for RCTs, ROBINS-I for observational studies, QUADAS-2 for diagnostics, and more.
📦
Batch screening
Paste 30 abstracts at once or import directly from PubMed via RIS. Get a complete evidence table — formatted and ready for your manuscript.
👥
Dual reviewer mode
Assign two reviewers per paper. BiasLens flags domain-level disagreements and calculates inter-rater reliability — a PRISMA requirement most tools charge extra for.
📊
PRISMA flow diagram
Built-in PRISMA 2020 flow diagram generator. Fill in your counts, export as SVG, and drop it straight into your manuscript. No third-party tool required.
📄
Export-ready reports
Download per-paper bias assessment reports as Word documents with full domain rationales, strengths, limitations, and overall judgment — ready for journal submission.
📥
PubMed / RIS import
Export your search results from PubMed, Zotero, or Covidence in RIS format. BiasLens parses every record and lets you select which papers to screen in bulk.
Supported bias tools

The right tool for every study design

BiasLens automatically selects from six validated bias assessment tools based on your paper's study design.

RoB 2
Cochrane Risk of Bias 2.0 — for randomized controlled trials
ROBINS-I
Risk of Bias in Non-Randomized Studies — for observational and intervention studies
QUADAS-2
Quality Assessment of Diagnostic Accuracy Studies — for diagnostic and prognostic research
Newcastle-Ottawa
Newcastle-Ottawa Scale — for cohort and case-control studies
GRADE
Grading of Recommendations Assessment — for systematic reviews and meta-analyses
AMSTAR-2
Assessing Methodological Quality — for systematic review appraisal
Pricing

Simple, transparent pricing

Start free. Upgrade when you're ready. Cancel anytime.

Free
$0
For researchers exploring the tool
  • ✓ 5 papers per month
  • ✓ All 6 bias tools
  • ✓ Domain-level rationales
  • – No export
  • – No batch screening
  • – No team features
Most popular
Researcher
$29/mo
For individual researchers and PhD students
  • ✓ Unlimited papers
  • ✓ All 6 bias tools
  • ✓ PDF upload & parsing
  • ✓ Word & CSV export
  • ✓ Batch screening (30 papers)
  • ✓ PRISMA flow diagram
  • ✓ PubMed / RIS import
Team
$99/mo
For research teams, labs, and CROs
  • ✓ Everything in Researcher
  • ✓ 5 team seats
  • ✓ Dual reviewer mode
  • ✓ Inter-rater reliability stats
  • ✓ Shared paper library
  • ✓ Priority support
EH
Evan J. Hernandez, MBA
PhD Candidate · Health Sciences · Rush University

BiasLens was built to solve a problem I face in my own research every day. Manual bias screening is one of the most time-consuming parts of a systematic review — and it's where errors most often slip in. I built this tool to make that process faster, more consistent, and actually enjoyable.

33+
peer-reviewed publications
$1.7M
funded research managed
7
h-index
Early access

Stop spending days on bias screening.

Join the early access list. First 20 researchers get 3 months free.

No credit card required.

✓ You're on the list — we'll be in touch soon!