Is LRNRS Free Battles really free?

Yes! Free Battles are completely free forever. No hidden costs, no paid tiers required. You can create unlimited battles with 1-4 questions each.

How is LRNRS different from Kahoot?

LRNRS is faster (60-second setup vs multiple minutes), completely free (no paid tiers for core features), requires no sign-up for teachers or students, and has AI that generates better technical questions with proper calculations and LaTeX support.

Do students need accounts to join?

No - students just enter a join code and their name (or nickname). No email, no password, no account required. Privacy-first design.

Can I use LRNRS for formative assessment?

Yes! After each battle, you receive an email with student rankings, question-by-question accuracy stats, and which questions students found most difficult. Perfect for identifying gaps in understanding.

Live Quiz Battles for

Physics Classes

Run a live physics quiz battle in about 60 seconds. LaTeX equation rendering for mechanics, E&M, thermodynamics, and quantum. Students join with a code — no accounts, no app, no projector required.

No student accounts • Unlimited participants free • Manual creation free forever

Why Physics Instructors Use LRNRS

Full equation support

Write quantitative questions the right way. LRNRS renders LaTeX like $F_{net} = ma$ and $E = \frac{kq}{r^2}$ inline in questions and answer options. No workarounds needed.

Questions on every student's screen

Physics problems need to be read carefully. Unlike Kahoot — which puts questions on a projector and answers on phones — LRNRS shows the full question with all equations on every student's device.

Concept checks between topics

Run a quick 3-question battle to gauge understanding before moving to the next concept. Set a generous time limit (60-90 seconds) for calculation problems. See class-wide accuracy in real time.

Exam review sessions

Build a 10-20 question review battle covering the full topic range. Students compete, you see the weakest concepts, and you can generate targeted follow-up practice for those gaps.

Topics Instructors Use LRNRS For

Kinematics: displacement, velocity, acceleration
Newton's laws and free body diagrams
Energy, work, and conservation laws
Rotational motion and torque
Waves and sound: frequency, wavelength
Circuits: Ohm's law, Kirchhoff's rules
Thermodynamics: laws, entropy, heat engines
Optics: refraction, lenses, diffraction

Free vs Paid

Free (forever)

Up to 4 questions per battle
Unlimited participants
Real-time leaderboard
Post-battle accuracy stats
No student accounts

Paid tiers (optional)

Unlimited questions (Creator, $4.99/mo)
AI physics question generation (Pro Lite, $9.99/mo)
CSV import for question banks
Async Campaign mode (homework battles)
Remediation battle generation

Run your first physics battle today

Manual question creation is free. Write 3-4 mechanics or E&M questions, launch, and see how your class is doing in under 60 seconds.