🦂 Pay per critique — no subscription required

Methodology critique that pays for itself

One rejected grant costs more than a year of critiques. Start free. Buy credits when you need them.

Free

$03 critiques

Try Aqrab. Score-only output, no export.

  • 3 free critiques
  • Score-only output
  • Basic agent (Aqrab Full Organism)
  • CONSORT & STROBE checks
  • Community support

10 Credits

$5$0.50 per critique

Pay-as-you-go. No subscription required.

  • 10 critique credits
  • Full structured output
  • Five-axis methodology critique
  • 47 methodology standards
  • Structured critique output
  • Never expires
Best value

50 Credits

$19$0.38 per critique

Best value for active researchers.

  • 50 critique credits
  • Full structured output
  • Five-axis methodology critique
  • 47 methodology standards
  • CQS scoring
  • Citation-linked recommendations
  • Priority support
  • Never expires

200 Credits

$49$0.25 per critique

For labs, research groups, and heavy users.

  • 200 critique credits
  • Everything in 50 Credits
  • Bulk pricing
  • Team sharing (coming soon)
  • Never expires
Power user

Unlimited

$99/month

Unlimited critiques for power users.

  • Unlimited critiques
  • Custom critique prompts
  • Full RAG (unlimited chars)
  • No API access
  • Priority email support
  • Cancel anytime

Institutional

$499+/month

For journals, CROs, universities, IRBs, and research organizations.

  • Volume pricing
  • REST API access
  • Team workspace (unlimited members)
  • SSO / SAML
  • Dedicated account manager
  • Custom reporting standards
  • SOC2-compliant storage
  • SLA guarantee
🔒 RAG-grounded critiques🚫 Zero training on your data✅ 47 methodology standards

Frequently asked questions

What counts as a critique?

Each time you submit a study description for analysis, that's one credit. Follow-up questions on the same critique don't count as additional credits.

Do credits expire?

No. Credit packs never expire. Use them whenever you need. Only the $99/mo unlimited plan is subscription-based.

Are my study designs private?

Yes. We never use your data for training. All data is encrypted at rest and purged on request.

Can I upgrade later?

Yes. Start free, buy credits when you need them, or upgrade to unlimited anytime.

What methodology standards are covered?

47 standards including CONSORT, STROBE, PROBAST, PRISMA, CARE, AGREE II, SPIRIT, TRIPOD, STARD, SQUIRE, and more.