title: Plans and pricing category: Account & billing description: What each Ostrol tier includes and how to pick the right one. order: 7

Plans and pricing

Ostrol has four tiers. The full price list, with current monthly and yearly rates, lives on the pricing page. This article explains what's actually in each tier so you can choose.

Free

For trying things out and light homework use.

20 solves per month on Fast and Standard engines
All export formats (PDF, PNG, LaTeX)
Public share links
Basic formula sheet (up to 50 saved formulas)

No credit card required. Free accounts never expire, but unused solves don't carry over.

Student

Built for one learner working through a course.

Unlimited solves on Fast, Standard, and Rigorous
50 solves per month on Research
Solve history retained for 12 months
Unlimited formula sheet
Priority support

Best value if you solve more than ~10 problems a week.

Pro

For tutors, freelancers, and serious self-learners who need the strongest verification.

Everything in Student
Unlimited solves on every engine level, including Research
Bulk export to zip
Auth-gated share links with expiry and view counts (details)
API access (rate-limited)
Priority support with same-business-day reply

Organizations

For schools, tutoring centers, and businesses.

Per-seat pricing with volume discounts
Centralized billing
Single sign-on (Google Workspace, Microsoft 365, SAML)
Custom branding (details)
Class rosters and assignments (Creating a class)
Admin invitation flows (Inviting students)

Talk to us at sales@ostrol.com for a quote.

Switching plans

Upgrade any time at /account/billing. The new tier kicks in immediately and we prorate the cost. Downgrades take effect at the end of the current billing period.

If you need to cancel, see Cancelling your subscription.

Couldn't find what you need? Email us.