No credit card required to get started. Upgrade to Pro for unlimited access.
| Feature | Free | Pro |
|---|---|---|
| Questions per day | 5 | Unlimited |
| Max PDF length | 60 pages | Unlimited |
| Cited answers | ✓ | ✓ |
| Google Scholar & paywalled PDFs | ✓ | ✓ |
| Sign in with Google | ✓ | ✓ |
| Priority support | — | ✓ |
Yes. Cancel any time from the billing page. You keep Pro access until the end of your billing period, then revert to the free tier automatically — no charges after that.
No — the free limit resets every day at midnight UTC. If you regularly need more than 5 questions per day, Pro is likely the right fit.
All major credit and debit cards via Stripe. Stripe also supports Apple Pay and Google Pay in supported browsers.
Not currently, but the yearly plan at $187/year works out to under $16/month — the most cost-effective option for regular users. Email us if you have a specific situation and we'll see what we can do.