Rigorous Reasoning

Pricing

Serious logic instruction, priced like you mean it.

Rigorous Reasoning replaces your $150 logic textbook and $80 courseware subscription with a single platform built for real proof construction, interactive practice, and instructor-grade feedback. Start free, upgrade when you're ready, and bring a whole class with you when you are.

AI-graded proofs11 reasoning tracksClass join codesFERPA-ready

Free

Sample it

Try the platform before you commit. No card required.

$0

  • Foundations track (full access)
  • First lesson of every other unit
  • 15 AI feedback uses per month
  • 5 most-due review queue items per day
  • Full achievements, streaks, and leaderboard
Create free account

Student Pro

Independent mastery

All 14 reasoning tracks, unlimited AI feedback, spaced repetition, and adaptive recommendations.

$119/year

or $14/month billed monthly

  • Every track: deductive, inductive, abductive, Bayesian, modal, and more
  • Unlimited AI-powered feedback on every attempt
  • Unlimited spaced repetition queue (SM-2 algorithm)
  • Adaptive path: skip-ahead, focus, or review based on your scores
  • Truth table builder, Venn diagrams, proof constructor, argument mapper
  • Study groups, leaderboard, full achievement system
  • Cancel anytime through the Stripe portal

Annual billing saves you 29% vs. month-to-month.

Start Student Pro

Team Small

Teach a small group

Everything in Student Pro plus instructor tools for up to 10 students. Designed for homeschool, tutors, and small reading groups.

$349/year

or $39/month billed monthly

  • Everything in Student Pro for the instructor
  • Up to 10 students with class join codes
  • Unlimited courses and assignments
  • Roster management with gradebook CSV export
  • Per-student progress dashboards
  • Priority email support

Best for homeschool families, tutors, and reading circles. Need more seats? See Team Classroom.

Start Team Small

Team Classroom

Teach a full class

Built for adjuncts, after-school programs, and small private schools running real courses with up to 50 students.

$899/year

or $99/month billed monthly

  • Everything in Team Small
  • Up to 50 students across all your courses
  • Assignment due dates and per-activity scoring
  • Student-by-student attempt history and rubric scores
  • Bulk roster import (CSV)
  • Priority email support with 24h SLA

Need more than 50 students or institutional contracts? Talk to us about Institution.

Start Team Classroom

Institution

Department-wide

Volume pricing, FERPA DPA, SSO/SIS integration, and dedicated onboarding for colleges, K-12 districts, and universities.

Custom/seat

  • Everything in Team Classroom for every seat
  • Unlimited students across unlimited courses
  • SSO and SIS integration (Canvas, Blackboard, Moodle)
  • FERPA Data Processing Agreement and sub-processor list
  • Volume pricing starting at $5/student/year
  • Dedicated onboarding and instructor training

Typical annual commitments: $2,500 (small college) to $30,000+ (R1).

Talk to sales

What it replaces

One platform, not three line items

A standard university intro-to-logic course usually means buying three things. Student Pro rolls them into one price that's lower than any of them individually.

Traditional textbook

$80 – $200

Hurley, Copi, or similar. One semester, one copy, then it's outdated.

Courseware access code

$75 – $120

MyLab, WebAssign, or similar. Expires at the end of the term.

Proof checker software

$40 – $150

Language, Proof and Logic, Logic Daemon, or standalone tools.

Rigorous Reasoning Student Pro

$99 / year

All three, integrated, plus AI feedback and progress tracking. Twelve months, not one semester.

Scholarships

If you can't afford it, we still want you in.

If you qualify for Pell Grant, institutional financial aid, or equivalent support outside the US, write to hardship@rigorousreasoning.com and we'll get you a full year of Student Pro for $0. No forms, no credit check, no catch. Rigorous thinking should not be locked behind a paywall for students who need it most.

Questions

Frequently asked

How does annual billing work?

You're charged once for the year. Your subscription renews automatically on the anniversary unless you cancel through the Stripe billing portal from your account. Annual billing is ~30% cheaper than month-to-month on both Student Pro and Instructor Pro.

Can I switch between monthly and annual later?

Yes. Open the Stripe billing portal from your account and change your interval. Credit for unused time on your current plan is applied to the new one automatically.

Is Student Pro good enough for a university logic course?

Student Pro includes every reasoning track needed for a standard intro-to-logic course (arguments, fallacies, categorical logic, propositional logic, predicate logic, proofs) plus tracks most intro courses skip (abductive, Bayesian, problem-solving). The proof editor actually checks your work — it's not a multiple-choice toy.

What's the difference between Instructor Pro and Institution?

Instructor Pro is designed for individual educators — adjuncts, tutors, homeschool leaders, AP instructors — who pay for their own tools. Institution pricing is for departments, schools, and districts that want volume discounts, SSO, SIS integration, and a signed FERPA Data Processing Agreement. If you're the only logic teacher paying, pick Instructor Pro. If procurement is involved, contact us.

Do you offer refunds?

Annual plans can be refunded within 14 days of purchase, no questions asked. After that we prorate the unused portion on a case-by-case basis. Monthly plans can be canceled at any time and you keep access until the end of the current period.

Is my purchase tied to a semester?

No. Student Pro annual is a full 12 months starting the day you buy it. If you buy in September, you're covered through the following September regardless of how your institution structures its terms.

How does institutional pricing work?

Institutional pricing starts at $5 per enrolled student per year with volume discounts and a floor for very small departments. Typical annual commitments run $2,500 for small liberal-arts colleges up to $30,000+ for R1 universities with multiple logic sections per term. Every institutional deal includes a signed FERPA DPA, a current sub-processor list, and dedicated instructor onboarding. Talk to us.

Where can I see your legal documents?

Terms of Service, Privacy Policy, and our FERPA Statement are public and up to date.